\begin{thebibliography}{72}
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  \def\bibnamefont#1{#1}\fi
\expandafter\ifx\csname bibfnamefont\endcsname\relax
  \def\bibfnamefont#1{#1}\fi
\expandafter\ifx\csname citenamefont\endcsname\relax
  \def\citenamefont#1{#1}\fi
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  \def\url#1{\texttt{#1}}\fi
\expandafter\ifx\csname urlprefix\endcsname\relax\def\urlprefix{URL }\fi
\providecommand{\bibinfo}[2]{#2}
\providecommand{\eprint}[2][]{\url{#2}}

\bibitem[{\citenamefont{Moore}(2003)}]{moore}
\bibinfo{author}{\bibfnamefont{G.}~\bibnamefont{Moore}}, in
  \emph{\bibinfo{booktitle}{2003 IEEE International Solid-State Circuits
  Conference.}} (\bibinfo{address}{Piscataway, NJ, USA}, \bibinfo{year}{2003}),
  vol.~\bibinfo{volume}{1}, pp. \bibinfo{pages}{20--23}.

\bibitem[{\citenamefont{Schlom et~al.}(2005)\citenamefont{Schlom, Billman,
  Haeni, Lettieri, Tan, Held, V\"{o}lk, and Hubbard}}]{ogale-oxide}
\bibinfo{author}{\bibfnamefont{D.~G.} \bibnamefont{Schlom}},
  \bibinfo{author}{\bibfnamefont{C.~A.} \bibnamefont{Billman}},
  \bibinfo{author}{\bibfnamefont{J.~H.} \bibnamefont{Haeni}},
  \bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{Lettieri}},
  \bibinfo{author}{\bibfnamefont{P.~H.} \bibnamefont{Tan}},
  \bibinfo{author}{\bibfnamefont{R.~R.~M.} \bibnamefont{Held}},
  \bibinfo{author}{\bibfnamefont{S.}~\bibnamefont{V\"{o}lk}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{K.~J.} \bibnamefont{Hubbard}}, in
  \emph{\bibinfo{booktitle}{Thin Films and Heterostructures for Oxide
  Electronics}}, edited by \bibinfo{editor}{\bibfnamefont{S.~B.}
  \bibnamefont{Ogale}} (\bibinfo{publisher}{Springer}, \bibinfo{year}{2005}),
  pp. \bibinfo{pages}{31--78}.

\bibitem[{\citenamefont{Schlom et~al.}(2008)\citenamefont{Schlom, Guha, and
  Datta}}]{schlom-mrs}
\bibinfo{author}{\bibfnamefont{D.~G.} \bibnamefont{Schlom}},
  \bibinfo{author}{\bibfnamefont{S.}~\bibnamefont{Guha}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{S.}~\bibnamefont{Datta}},
  \bibinfo{journal}{Mater. Res. Bull.} \textbf{\bibinfo{volume}{33}},
  \bibinfo{pages}{1017} (\bibinfo{year}{2008}).

\bibitem[{\citenamefont{Mistry et~al.}(2007)\citenamefont{Mistry, Allen, Auth,
  Beattie, Bergstrom, Bost, Brazier, Buehler, Cappellani, Chau
  et~al.}}]{mistry}
\bibinfo{author}{\bibfnamefont{K.}~\bibnamefont{Mistry}},
  \bibinfo{author}{\bibfnamefont{C.}~\bibnamefont{Allen}},
  \bibinfo{author}{\bibfnamefont{C.}~\bibnamefont{Auth}},
  \bibinfo{author}{\bibfnamefont{B.}~\bibnamefont{Beattie}},
  \bibinfo{author}{\bibfnamefont{D.}~\bibnamefont{Bergstrom}},
  \bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Bost}},
  \bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Brazier}},
  \bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Buehler}},
  \bibinfo{author}{\bibfnamefont{A.}~\bibnamefont{Cappellani}},
  \bibinfo{author}{\bibfnamefont{R.}~\bibnamefont{Chau}}, \bibnamefont{et~al.},
  in \emph{\bibinfo{booktitle}{Electron Devices Meeting, 2007. IEDM 2007. IEEE
  International}} (\bibinfo{year}{2007}), pp. \bibinfo{pages}{247--250}.

\bibitem[{\citenamefont{Hicks et~al.}(2008)\citenamefont{Hicks, Bergstrom,
  Hattendorf, Jopling, Maiz, Pae, Prasad, and Wiedemer}}]{intel-highk-2}
\bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{Hicks}},
  \bibinfo{author}{\bibfnamefont{D.}~\bibnamefont{Bergstrom}},
  \bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Hattendorf}},
  \bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{Jopling}},
  \bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{Maiz}},
  \bibinfo{author}{\bibfnamefont{S.}~\bibnamefont{Pae}},
  \bibinfo{author}{\bibfnamefont{C.}~\bibnamefont{Prasad}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{Wiedemer}},
  \bibinfo{journal}{Intel Technol. J.} \textbf{\bibinfo{volume}{12}},
  \bibinfo{pages}{131} (\bibinfo{year}{2008}).

\bibitem[{\citenamefont{Scansen}(21 Jan. 2008)}]{scansen}
\bibinfo{author}{\bibfnamefont{D.}~\bibnamefont{Scansen}},
  \emph{\bibinfo{title}{Under the hood: 45 nm: What intel didn't tell you}}
  (\bibinfo{year}{21 Jan. 2008}),
  \bibinfo{note}{\href{http://www.techonline.com/product/underthehood/20591800%
4}{ www.techonline.com/product/underthehood/205918004}}.

\bibitem[{\citenamefont{Guha and Narayanan}(2007)}]{guha}
\bibinfo{author}{\bibfnamefont{S.}~\bibnamefont{Guha}} \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{V.}~\bibnamefont{Narayanan}},
  \bibinfo{journal}{Phys. Rev. Lett.} \textbf{\bibinfo{volume}{98}}
  (\bibinfo{year}{2007}).

\bibitem[{\citenamefont{Christen et~al.}(2006)\citenamefont{Christen,
  G.~E.~Jellison, Ohkubo, Huang, Reeves, Cicerrella, Freeouf, Jia, and
  Schlom}}]{christen}
\bibinfo{author}{\bibfnamefont{H.~M.} \bibnamefont{Christen}},
  \bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{G.~E.~Jellison}},
  \bibinfo{author}{\bibfnamefont{I.}~\bibnamefont{Ohkubo}},
  \bibinfo{author}{\bibfnamefont{S.}~\bibnamefont{Huang}},
  \bibinfo{author}{\bibfnamefont{M.~E.} \bibnamefont{Reeves}},
  \bibinfo{author}{\bibfnamefont{E.}~\bibnamefont{Cicerrella}},
  \bibinfo{author}{\bibfnamefont{J.~L.} \bibnamefont{Freeouf}},
  \bibinfo{author}{\bibfnamefont{Y.}~\bibnamefont{Jia}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{D.~G.} \bibnamefont{Schlom}},
  \bibinfo{journal}{Appl. Phys. Lett.} \textbf{\bibinfo{volume}{88}},
  \bibinfo{eid}{262906} (\bibinfo{year}{2006}).

\bibitem[{\citenamefont{Afanas'ev et~al.}(2004)\citenamefont{Afanas'ev,
  Stesmans, Zhao, Caymax, Heeg, Schubert, Jia, Schlom, and
  Lucovsky}}]{afanasev-1}
\bibinfo{author}{\bibfnamefont{V.~V.} \bibnamefont{Afanas'ev}},
  \bibinfo{author}{\bibfnamefont{A.}~\bibnamefont{Stesmans}},
  \bibinfo{author}{\bibfnamefont{C.}~\bibnamefont{Zhao}},
  \bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Caymax}},
  \bibinfo{author}{\bibfnamefont{T.}~\bibnamefont{Heeg}},
  \bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{Schubert}},
  \bibinfo{author}{\bibfnamefont{Y.}~\bibnamefont{Jia}},
  \bibinfo{author}{\bibfnamefont{D.~G.} \bibnamefont{Schlom}},
  \bibnamefont{and} \bibinfo{author}{\bibfnamefont{G.}~\bibnamefont{Lucovsky}},
  \bibinfo{journal}{Appl. Phys. Lett.} \textbf{\bibinfo{volume}{85}},
  \bibinfo{pages}{5917} (\bibinfo{year}{2004}).

\bibitem[{\citenamefont{Zhao et~al.}(2005)\citenamefont{Zhao, Witters, Brijs,
  Bender, Richard, Caymax, Heeg, Schubert, Afanas'ev, Stesmans et~al.}}]{zhao}
\bibinfo{author}{\bibfnamefont{C.}~\bibnamefont{Zhao}},
  \bibinfo{author}{\bibfnamefont{T.}~\bibnamefont{Witters}},
  \bibinfo{author}{\bibfnamefont{B.}~\bibnamefont{Brijs}},
  \bibinfo{author}{\bibfnamefont{H.}~\bibnamefont{Bender}},
  \bibinfo{author}{\bibfnamefont{O.}~\bibnamefont{Richard}},
  \bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Caymax}},
  \bibinfo{author}{\bibfnamefont{T.}~\bibnamefont{Heeg}},
  \bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{Schubert}},
  \bibinfo{author}{\bibfnamefont{V.~V.} \bibnamefont{Afanas'ev}},
  \bibinfo{author}{\bibfnamefont{A.}~\bibnamefont{Stesmans}},
  \bibnamefont{et~al.}, \bibinfo{journal}{Appl. Phys. Lett.}
  \textbf{\bibinfo{volume}{86}}, \bibinfo{eid}{132903} (\bibinfo{year}{2005}).

\bibitem[{\citenamefont{Heeg et~al.}(2006)\citenamefont{Heeg, Schubert, Buchal,
  Cicerrella, Freeouf, Tian, Jia, and Schlom}}]{heeg}
\bibinfo{author}{\bibfnamefont{T.}~\bibnamefont{Heeg}},
  \bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{Schubert}},
  \bibinfo{author}{\bibfnamefont{C.}~\bibnamefont{Buchal}},
  \bibinfo{author}{\bibfnamefont{E.}~\bibnamefont{Cicerrella}},
  \bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{Freeouf}},
  \bibinfo{author}{\bibfnamefont{W.}~\bibnamefont{Tian}},
  \bibinfo{author}{\bibfnamefont{Y.}~\bibnamefont{Jia}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{D.}~\bibnamefont{Schlom}},
  \bibinfo{journal}{Appl. Phys. A} \textbf{\bibinfo{volume}{83}},
  \bibinfo{pages}{103} (\bibinfo{year}{2006}).

\bibitem[{\citenamefont{Edge et~al.}(2006{\natexlab{a}})\citenamefont{Edge,
  Schlom, Stemmer, Lucovsky, and Luning}}]{edge-1}
\bibinfo{author}{\bibfnamefont{L.}~\bibnamefont{Edge}},
  \bibinfo{author}{\bibfnamefont{D.}~\bibnamefont{Schlom}},
  \bibinfo{author}{\bibfnamefont{S.}~\bibnamefont{Stemmer}},
  \bibinfo{author}{\bibfnamefont{G.}~\bibnamefont{Lucovsky}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{Luning}},
  \bibinfo{journal}{Radiat. Phys. Chem.} \textbf{\bibinfo{volume}{75}},
  \bibinfo{pages}{1608 } (\bibinfo{year}{2006}{\natexlab{a}}).

\bibitem[{\citenamefont{Cicerrella et~al.}(2005)\citenamefont{Cicerrella,
  Freeouf, Edge, Schlom, Heeg, Schubert, and Chambers}}]{cicerrella}
\bibinfo{author}{\bibfnamefont{E.}~\bibnamefont{Cicerrella}},
  \bibinfo{author}{\bibfnamefont{J.~L.} \bibnamefont{Freeouf}},
  \bibinfo{author}{\bibfnamefont{L.~F.} \bibnamefont{Edge}},
  \bibinfo{author}{\bibfnamefont{D.~G.} \bibnamefont{Schlom}},
  \bibinfo{author}{\bibfnamefont{T.}~\bibnamefont{Heeg}},
  \bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{Schubert}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{S.~A.} \bibnamefont{Chambers}},
  \bibinfo{journal}{J. Vac. Sci. Technol., A} \textbf{\bibinfo{volume}{23}},
  \bibinfo{pages}{1676} (\bibinfo{year}{2005}).

\bibitem[{\citenamefont{Afanas'ev et~al.}(2006)\citenamefont{Afanas'ev,
  Stesmans, Edge, Schlom, Heeg, and Schubert}}]{afanasev-2}
\bibinfo{author}{\bibfnamefont{V.~V.} \bibnamefont{Afanas'ev}},
  \bibinfo{author}{\bibfnamefont{A.}~\bibnamefont{Stesmans}},
  \bibinfo{author}{\bibfnamefont{L.~F.} \bibnamefont{Edge}},
  \bibinfo{author}{\bibfnamefont{D.~G.} \bibnamefont{Schlom}},
  \bibinfo{author}{\bibfnamefont{T.}~\bibnamefont{Heeg}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{Schubert}},
  \bibinfo{journal}{Appl. Phys. Lett.} \textbf{\bibinfo{volume}{88}},
  \bibinfo{eid}{032104} (\bibinfo{year}{2006}).

\bibitem[{\citenamefont{Edge et~al.}(2006{\natexlab{b}})\citenamefont{Edge,
  Schlom, Rivillon, Chabal, Agustin, Stemmer, Lee, Kim, Craft, Maria
  et~al.}}]{edge-2}
\bibinfo{author}{\bibfnamefont{L.~F.} \bibnamefont{Edge}},
  \bibinfo{author}{\bibfnamefont{D.~G.} \bibnamefont{Schlom}},
  \bibinfo{author}{\bibfnamefont{S.}~\bibnamefont{Rivillon}},
  \bibinfo{author}{\bibfnamefont{Y.~J.} \bibnamefont{Chabal}},
  \bibinfo{author}{\bibfnamefont{M.~P.} \bibnamefont{Agustin}},
  \bibinfo{author}{\bibfnamefont{S.}~\bibnamefont{Stemmer}},
  \bibinfo{author}{\bibfnamefont{T.}~\bibnamefont{Lee}},
  \bibinfo{author}{\bibfnamefont{M.~J.} \bibnamefont{Kim}},
  \bibinfo{author}{\bibfnamefont{H.~S.} \bibnamefont{Craft}},
  \bibinfo{author}{\bibfnamefont{J.-P.} \bibnamefont{Maria}},
  \bibnamefont{et~al.}, \bibinfo{journal}{Appl. Phys. Lett.}
  \textbf{\bibinfo{volume}{89}}, \bibinfo{eid}{062902}
  (\bibinfo{year}{2006}{\natexlab{b}}).

\bibitem[{\citenamefont{Sivasubramani et~al.}(2006)\citenamefont{Sivasubramani,
  Lee, Kim, Kim, Gnade, Wallace, Edge, Schlom, Stevie, Garcia
  et~al.}}]{sivasubramani}
\bibinfo{author}{\bibfnamefont{P.}~\bibnamefont{Sivasubramani}},
  \bibinfo{author}{\bibfnamefont{T.~H.} \bibnamefont{Lee}},
  \bibinfo{author}{\bibfnamefont{M.~J.} \bibnamefont{Kim}},
  \bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{Kim}},
  \bibinfo{author}{\bibfnamefont{B.~E.} \bibnamefont{Gnade}},
  \bibinfo{author}{\bibfnamefont{R.~M.} \bibnamefont{Wallace}},
  \bibinfo{author}{\bibfnamefont{L.~F.} \bibnamefont{Edge}},
  \bibinfo{author}{\bibfnamefont{D.~G.} \bibnamefont{Schlom}},
  \bibinfo{author}{\bibfnamefont{F.~A.} \bibnamefont{Stevie}},
  \bibinfo{author}{\bibfnamefont{R.}~\bibnamefont{Garcia}},
  \bibnamefont{et~al.}, \bibinfo{journal}{Appl. Phys. Lett.}
  \textbf{\bibinfo{volume}{89}}, \bibinfo{eid}{242907} (\bibinfo{year}{2006}).

\bibitem[{\citenamefont{Lopes et~al.}(2007)\citenamefont{Lopes, Roeckerath,
  Heeg, Littmark, Schubert, Mantl, Jia, and Schlom}}]{lopes}
\bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{Lopes}},
  \bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Roeckerath}},
  \bibinfo{author}{\bibfnamefont{T.}~\bibnamefont{Heeg}},
  \bibinfo{author}{\bibfnamefont{U.}~\bibnamefont{Littmark}},
  \bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{Schubert}},
  \bibinfo{author}{\bibfnamefont{S.}~\bibnamefont{Mantl}},
  \bibinfo{author}{\bibfnamefont{Y.}~\bibnamefont{Jia}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{D.}~\bibnamefont{Schlom}},
  \bibinfo{journal}{Microelectron. Eng.} \textbf{\bibinfo{volume}{84}},
  \bibinfo{pages}{1890 } (\bibinfo{year}{2007}).

\bibitem[{\citenamefont{Wang et~al.}(2007)\citenamefont{Wang, He, Ma, Edge, and
  Schlom}}]{wang}
\bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Wang}},
  \bibinfo{author}{\bibfnamefont{W.}~\bibnamefont{He}},
  \bibinfo{author}{\bibfnamefont{T.~P.} \bibnamefont{Ma}},
  \bibinfo{author}{\bibfnamefont{L.~F.} \bibnamefont{Edge}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{D.~G.} \bibnamefont{Schlom}},
  \bibinfo{journal}{Appl. Phys. Lett.} \textbf{\bibinfo{volume}{90}},
  \bibinfo{eid}{053502} (\bibinfo{year}{2007}).

\bibitem[{\citenamefont{Edge et~al.}(2008)\citenamefont{Edge, Tian,
  Vaithyanathan, Heeg, Schlom, Klenov, Stemmer, Wang, and Kim}}]{edge-3}
\bibinfo{author}{\bibfnamefont{L.}~\bibnamefont{Edge}},
  \bibinfo{author}{\bibfnamefont{W.}~\bibnamefont{Tian}},
  \bibinfo{author}{\bibfnamefont{V.}~\bibnamefont{Vaithyanathan}},
  \bibinfo{author}{\bibfnamefont{T.}~\bibnamefont{Heeg}},
  \bibinfo{author}{\bibfnamefont{D.}~\bibnamefont{Schlom}},
  \bibinfo{author}{\bibfnamefont{D.}~\bibnamefont{Klenov}},
  \bibinfo{author}{\bibfnamefont{S.}~\bibnamefont{Stemmer}},
  \bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{Wang}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Kim}}, in
  \emph{\bibinfo{booktitle}{ECS Trans.}} (\bibinfo{address}{Honolulu, HI,
  United states}, \bibinfo{year}{2008}), vol.~\bibinfo{volume}{16}, pp.
  \bibinfo{pages}{213 -- 227}.

\bibitem[{\citenamefont{\"{O}zben et~al.}(2008)\citenamefont{\"{O}zben, Lopes,
  Roeckerath, Lenk, Holl\"{a}nder, Jia, Schlom, Schubert, and Mantl}}]{ozben}
\bibinfo{author}{\bibfnamefont{E.~D.} \bibnamefont{\"{O}zben}},
  \bibinfo{author}{\bibfnamefont{J.~M.~J.} \bibnamefont{Lopes}},
  \bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Roeckerath}},
  \bibinfo{author}{\bibfnamefont{S.}~\bibnamefont{Lenk}},
  \bibinfo{author}{\bibfnamefont{B.}~\bibnamefont{Holl\"{a}nder}},
  \bibinfo{author}{\bibfnamefont{Y.}~\bibnamefont{Jia}},
  \bibinfo{author}{\bibfnamefont{D.~G.} \bibnamefont{Schlom}},
  \bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{Schubert}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{S.}~\bibnamefont{Mantl}},
  \bibinfo{journal}{Appl. Phys. Lett.} \textbf{\bibinfo{volume}{93}},
  \bibinfo{eid}{052902} (\bibinfo{year}{2008}).

\bibitem[{\citenamefont{Roeckerath et~al.}(2009)\citenamefont{Roeckerath,
  Lopes, Durgun~Ozben, Sandow, Lenk, Heeg, Schubert, and Mantl}}]{roeckerath}
\bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Roeckerath}},
  \bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{Lopes}},
  \bibinfo{author}{\bibfnamefont{E.}~\bibnamefont{Durgun~Ozben}},
  \bibinfo{author}{\bibfnamefont{C.}~\bibnamefont{Sandow}},
  \bibinfo{author}{\bibfnamefont{S.}~\bibnamefont{Lenk}},
  \bibinfo{author}{\bibfnamefont{T.}~\bibnamefont{Heeg}},
  \bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{Schubert}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{S.}~\bibnamefont{Mantl}},
  \bibinfo{journal}{Appl. Phys. A} \textbf{\bibinfo{volume}{94}},
  \bibinfo{pages}{521 } (\bibinfo{year}{2009}).

\bibitem[{\citenamefont{Wagner et~al.}(2006)\citenamefont{Wagner, Heeg,
  Schubert, Zhao, Richard, Caymax, Afanas'ev, and Mantl}}]{wagner}
\bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Wagner}},
  \bibinfo{author}{\bibfnamefont{T.}~\bibnamefont{Heeg}},
  \bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{Schubert}},
  \bibinfo{author}{\bibfnamefont{C.}~\bibnamefont{Zhao}},
  \bibinfo{author}{\bibfnamefont{O.}~\bibnamefont{Richard}},
  \bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Caymax}},
  \bibinfo{author}{\bibfnamefont{V.}~\bibnamefont{Afanas'ev}},
  \bibnamefont{and} \bibinfo{author}{\bibfnamefont{S.}~\bibnamefont{Mantl}},
  \bibinfo{journal}{Solid-State Electron.} \textbf{\bibinfo{volume}{50}},
  \bibinfo{pages}{58 } (\bibinfo{year}{2006}).

\bibitem[{\citenamefont{Myllymaki et~al.}(Sept. 2007)\citenamefont{Myllymaki,
  Roeckerath, Putkonen, Lenk, Schubert, Niinisto, and Mantl}}]{myllymaki}
\bibinfo{author}{\bibfnamefont{P.}~\bibnamefont{Myllymaki}},
  \bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Roeckerath}},
  \bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Putkonen}},
  \bibinfo{author}{\bibfnamefont{S.}~\bibnamefont{Lenk}},
  \bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{Schubert}},
  \bibinfo{author}{\bibfnamefont{L.}~\bibnamefont{Niinisto}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{S.}~\bibnamefont{Mantl}},
  \bibinfo{journal}{Appl. Phys. A} \textbf{\bibinfo{volume}{A88}},
  \bibinfo{pages}{633 } (\bibinfo{year}{Sept. 2007}).

\bibitem[{\citenamefont{Kim et~al.}(2006)\citenamefont{Kim, Farmer, Lehn, Rao,
  and Gordon}}]{kim}
\bibinfo{author}{\bibfnamefont{K.~H.} \bibnamefont{Kim}},
  \bibinfo{author}{\bibfnamefont{D.~B.} \bibnamefont{Farmer}},
  \bibinfo{author}{\bibfnamefont{J.-S.~M.} \bibnamefont{Lehn}},
  \bibinfo{author}{\bibfnamefont{P.~V.} \bibnamefont{Rao}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{R.~G.} \bibnamefont{Gordon}},
  \bibinfo{journal}{Appl. Phys. Lett.} \textbf{\bibinfo{volume}{89}},
  \bibinfo{eid}{133512} (\bibinfo{year}{2006}).

\bibitem[{\citenamefont{Thomas et~al.}(2007)\citenamefont{Thomas, Ehrhart,
  Roeckerath, van Elshocht, Rije, Luysberg, Boese, Schubert, Caymax, and
  Waser}}]{thomas}
\bibinfo{author}{\bibfnamefont{R.}~\bibnamefont{Thomas}},
  \bibinfo{author}{\bibfnamefont{P.}~\bibnamefont{Ehrhart}},
  \bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Roeckerath}},
  \bibinfo{author}{\bibfnamefont{S.}~\bibnamefont{van Elshocht}},
  \bibinfo{author}{\bibfnamefont{E.}~\bibnamefont{Rije}},
  \bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Luysberg}},
  \bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Boese}},
  \bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{Schubert}},
  \bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Caymax}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{R.}~\bibnamefont{Waser}}, \bibinfo{journal}{J.
  Electrochem. Soc.} \textbf{\bibinfo{volume}{154}}, \bibinfo{pages}{147 }
  (\bibinfo{year}{2007}).

\bibitem[{\citenamefont{Heeg et~al.}(2007)\citenamefont{Heeg, Roeckerath,
  Schubert, Zander, Buchal, Chen, Jia, Jia, Adamo, and Schlom}}]{heeg-2}
\bibinfo{author}{\bibfnamefont{T.}~\bibnamefont{Heeg}},
  \bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Roeckerath}},
  \bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{Schubert}},
  \bibinfo{author}{\bibfnamefont{W.}~\bibnamefont{Zander}},
  \bibinfo{author}{\bibfnamefont{C.}~\bibnamefont{Buchal}},
  \bibinfo{author}{\bibfnamefont{H.~Y.} \bibnamefont{Chen}},
  \bibinfo{author}{\bibfnamefont{C.~L.} \bibnamefont{Jia}},
  \bibinfo{author}{\bibfnamefont{Y.}~\bibnamefont{Jia}},
  \bibinfo{author}{\bibfnamefont{C.}~\bibnamefont{Adamo}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{D.~G.} \bibnamefont{Schlom}},
  \bibinfo{journal}{Appl. Phys. Lett.} \textbf{\bibinfo{volume}{90}},
  \bibinfo{eid}{192901} (\bibinfo{year}{2007}).

\bibitem[{\citenamefont{Delugas et~al.}(2007)\citenamefont{Delugas, Fiorentini,
  Filippetti, and Pourtois}}]{delugas-th}
\bibinfo{author}{\bibfnamefont{P.}~\bibnamefont{Delugas}},
  \bibinfo{author}{\bibfnamefont{V.}~\bibnamefont{Fiorentini}},
  \bibinfo{author}{\bibfnamefont{A.}~\bibnamefont{Filippetti}},
  \bibnamefont{and} \bibinfo{author}{\bibfnamefont{G.}~\bibnamefont{Pourtois}},
  \bibinfo{journal}{Phys. Rev. B} \textbf{\bibinfo{volume}{75}},
  \bibinfo{eid}{115126} (\bibinfo{year}{2007}).

\bibitem[{\citenamefont{Vali}(2008)}]{vali-zr}
\bibinfo{author}{\bibfnamefont{R.}~\bibnamefont{Vali}}, \bibinfo{journal}{Solid
  State Commun.} \textbf{\bibinfo{volume}{145}}, \bibinfo{pages}{497 }
  (\bibinfo{year}{2008}).

\bibitem[{\citenamefont{Vali}(2009)}]{vali-hf}
\bibinfo{author}{\bibfnamefont{R.}~\bibnamefont{Vali}}, \bibinfo{journal}{Solid
  State Commun.} \textbf{\bibinfo{volume}{149}}, \bibinfo{pages}{519 }
  (\bibinfo{year}{2009}).

\bibitem[{EPA()}]{EPAPS}
\bibinfo{note}{See
  \href{http://www.physics.rutgers.edu/~sinisa/highk/supp.pdf}{
  www.physics.rutgers.edu/\~{}sinisa/highk/supp.pdf} for zone-center phonon
  frequencies, as well as the infrared activities for those modes that are
  infrared-active.}

\bibitem[{\citenamefont{Badie}(1978)}]{badie-1}
\bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{Badie}}, \bibinfo{journal}{Rev.
  Int. Hautes Temp. R\' efact., Fr} \textbf{\bibinfo{volume}{15}},
  \bibinfo{pages}{183} (\bibinfo{year}{1978}).

\bibitem[{\citenamefont{Badie and Foex}(1978)}]{badie-2}
\bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{Badie}} \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Foex}}, \bibinfo{journal}{J.
  Solid State Chem.} \textbf{\bibinfo{volume}{26}}, \bibinfo{pages}{311}
  (\bibinfo{year}{1978}).

\bibitem[{\citenamefont{Coutures et~al.}(1980)\citenamefont{Coutures, Badie,
  Berjoan, Coutures, Flamand, and Rouanet}}]{coutures}
\bibinfo{author}{\bibfnamefont{J.-P.} \bibnamefont{Coutures}},
  \bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{Badie}},
  \bibinfo{author}{\bibfnamefont{R.}~\bibnamefont{Berjoan}},
  \bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{Coutures}},
  \bibinfo{author}{\bibfnamefont{R.}~\bibnamefont{Flamand}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{A.}~\bibnamefont{Rouanet}},
  \bibinfo{journal}{High Temp. Sci.} \textbf{\bibinfo{volume}{13}},
  \bibinfo{pages}{331} (\bibinfo{year}{1980}).

\bibitem[{sch()}]{schubert}
\bibinfo{note}{J. Schubert (private communication).}

\bibitem[{\citenamefont{Berndt et~al.}(1975)\citenamefont{Berndt, Maier, and
  Keller}}]{berndt}
\bibinfo{author}{\bibfnamefont{U.}~\bibnamefont{Berndt}},
  \bibinfo{author}{\bibfnamefont{D.}~\bibnamefont{Maier}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{C.}~\bibnamefont{Keller}},
  \bibinfo{journal}{J. Solid State Chem.} \textbf{\bibinfo{volume}{13}},
  \bibinfo{pages}{131} (\bibinfo{year}{1975}).

\bibitem[{\citenamefont{Rabenau}(1956)}]{labbo}
\bibinfo{author}{\bibfnamefont{A.}~\bibnamefont{Rabenau}}, \bibinfo{journal}{Z.
  Anorg. Allg. Chem.} \textbf{\bibinfo{volume}{288}}, \bibinfo{pages}{221}
  (\bibinfo{year}{1956}).

\bibitem[{\citenamefont{Ito et~al.}(2001)\citenamefont{Ito, Tezuka, and
  Hinatsu}}]{ito}
\bibinfo{author}{\bibfnamefont{K.}~\bibnamefont{Ito}},
  \bibinfo{author}{\bibfnamefont{K.}~\bibnamefont{Tezuka}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{Y.}~\bibnamefont{Hinatsu}},
  \bibinfo{journal}{J. Solid State Chem.} \textbf{\bibinfo{volume}{157}},
  \bibinfo{pages}{173} (\bibinfo{year}{2001}).

\bibitem[{\citenamefont{Bharathy et~al.}(2009)\citenamefont{Bharathy, Fox,
  Mugavero, and zur Loye}}]{bharathy}
\bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Bharathy}},
  \bibinfo{author}{\bibfnamefont{A.}~\bibnamefont{Fox}},
  \bibinfo{author}{\bibfnamefont{S.}~\bibnamefont{Mugavero}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{H.-C.} \bibnamefont{zur Loye}},
  \bibinfo{journal}{Solid State Sci.} \textbf{\bibinfo{volume}{11}},
  \bibinfo{pages}{651} (\bibinfo{year}{2009}).

\bibitem[{hee()}]{heeg-apl}
\bibinfo{note}{T. Heeg, K. Wiedenmann, M. Roeckerath, S. Coh, D. Vanderbilt, J.
  Schubert and D.~G. Schlom, unpublished.}

\bibitem[{\citenamefont{Goldschmidt}(1926)}]{goldschmidt}
\bibinfo{author}{\bibfnamefont{V.}~\bibnamefont{Goldschmidt}},
  \bibinfo{journal}{Naturwissenschaften} \textbf{\bibinfo{volume}{21}},
  \bibinfo{pages}{477} (\bibinfo{year}{1926}).

\bibitem[{\citenamefont{Woodward}(1997)}]{woodward-oct}
\bibinfo{author}{\bibfnamefont{P.~M.} \bibnamefont{Woodward}},
  \bibinfo{journal}{Acta Crystallogr. Sect. B} \textbf{\bibinfo{volume}{53}},
  \bibinfo{pages}{32} (\bibinfo{year}{1997}).

\bibitem[{\citenamefont{Glazer}(1972)}]{glazer-oct}
\bibinfo{author}{\bibfnamefont{A.~M.} \bibnamefont{Glazer}},
  \bibinfo{journal}{Acta Crystallogr. Sect. B} \textbf{\bibinfo{volume}{28}},
  \bibinfo{pages}{3384} (\bibinfo{year}{1972}).

\bibitem[{\citenamefont{Giannozzi et~al.}(2009)\citenamefont{Giannozzi, Baroni,
  Bonini, Calandra, Car, Cavazzoni, Ceresoli, Chiarotti, Cococcioni, Dabo
  et~al.}}]{QE-2009}
\bibinfo{author}{\bibfnamefont{P.}~\bibnamefont{Giannozzi}},
  \bibinfo{author}{\bibfnamefont{S.}~\bibnamefont{Baroni}},
  \bibinfo{author}{\bibfnamefont{N.}~\bibnamefont{Bonini}},
  \bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Calandra}},
  \bibinfo{author}{\bibfnamefont{R.}~\bibnamefont{Car}},
  \bibinfo{author}{\bibfnamefont{C.}~\bibnamefont{Cavazzoni}},
  \bibinfo{author}{\bibfnamefont{D.}~\bibnamefont{Ceresoli}},
  \bibinfo{author}{\bibfnamefont{G.~L.} \bibnamefont{Chiarotti}},
  \bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Cococcioni}},
  \bibinfo{author}{\bibfnamefont{I.}~\bibnamefont{Dabo}}, \bibnamefont{et~al.},
  \bibinfo{journal}{Journal of Physics: Condensed Matter}
  \textbf{\bibinfo{volume}{21}}, \bibinfo{pages}{395502 (19pp)}
  (\bibinfo{year}{2009}), \urlprefix\url{http://www.quantum-espresso.org}.

\bibitem[{\citenamefont{Perdew et~al.}(1996)\citenamefont{Perdew, Burke, and
  Ernzerhof}}]{perdew-pbe}
\bibinfo{author}{\bibfnamefont{J.~P.} \bibnamefont{Perdew}},
  \bibinfo{author}{\bibfnamefont{K.}~\bibnamefont{Burke}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Ernzerhof}},
  \bibinfo{journal}{Phys. Rev. Lett.} \textbf{\bibinfo{volume}{77}},
  \bibinfo{pages}{3865} (\bibinfo{year}{1996}).

\bibitem[{\citenamefont{Vanderbilt}(1985)}]{vanderbilt-uspp}
\bibinfo{author}{\bibfnamefont{D.}~\bibnamefont{Vanderbilt}},
  \bibinfo{journal}{Phys. Rev. B} \textbf{\bibinfo{volume}{32}},
  \bibinfo{pages}{8412} (\bibinfo{year}{1985}).

\bibitem[{\citenamefont{Monkhorst and Pack}(1976)}]{monkhorst-grid}
\bibinfo{author}{\bibfnamefont{H.~J.} \bibnamefont{Monkhorst}}
  \bibnamefont{and} \bibinfo{author}{\bibfnamefont{J.~D.} \bibnamefont{Pack}},
  \bibinfo{journal}{Phys. Rev. B} \textbf{\bibinfo{volume}{13}},
  \bibinfo{pages}{5188} (\bibinfo{year}{1976}).

\bibitem[{\citenamefont{Staroverov et~al.}(2004)\citenamefont{Staroverov,
  Scuseria, Tao, and Perdew}}]{gga-volume}
\bibinfo{author}{\bibfnamefont{V.~N.} \bibnamefont{Staroverov}},
  \bibinfo{author}{\bibfnamefont{G.~E.} \bibnamefont{Scuseria}},
  \bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{Tao}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{J.~P.} \bibnamefont{Perdew}},
  \bibinfo{journal}{Phys. Rev. B} \textbf{\bibinfo{volume}{69}},
  \bibinfo{pages}{075102} (\bibinfo{year}{2004}).

\bibitem[{\citenamefont{Pies and Weiss}(2006)}]{landolt-nitrides}
\bibinfo{author}{\bibfnamefont{W.}~\bibnamefont{Pies}} \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{A.}~\bibnamefont{Weiss}},
  \emph{\bibinfo{title}{Landolt-B\"ornstein - Group III Condensed Matter}}
  (\bibinfo{publisher}{Springer-Verlag}, \bibinfo{year}{2006}), vol.
  \bibinfo{volume}{7c1}, chap. \bibinfo{chapter}{VI.1.5.1}, pp.
  \bibinfo{pages}{14--34}.

\bibitem[{gdn()}]{gdn}
\bibinfo{note}{In the case of GdN the anomaly is more likely the result of the
  large spin splitting and strong ferromagnetism associated with the huge
  magnetic moment of the $4f^7$ configuration.}

\bibitem[{\citenamefont{Baroni et~al.}(2001)\citenamefont{Baroni, de~Gironcoli,
  Dal~Corso, and Giannozzi}}]{baroni-rmp}
\bibinfo{author}{\bibfnamefont{S.}~\bibnamefont{Baroni}},
  \bibinfo{author}{\bibfnamefont{S.}~\bibnamefont{de~Gironcoli}},
  \bibinfo{author}{\bibfnamefont{A.}~\bibnamefont{Dal~Corso}},
  \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{P.}~\bibnamefont{Giannozzi}},
  \bibinfo{journal}{Rev. Mod. Phys.} \textbf{\bibinfo{volume}{73}},
  \bibinfo{pages}{515} (\bibinfo{year}{2001}).

\bibitem[{\citenamefont{Cockayne and Burton}(2000)}]{cockayne}
\bibinfo{author}{\bibfnamefont{E.}~\bibnamefont{Cockayne}} \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{B.~P.} \bibnamefont{Burton}},
  \bibinfo{journal}{Phys. Rev. B} \textbf{\bibinfo{volume}{62}},
  \bibinfo{pages}{3735} (\bibinfo{year}{2000}).

\bibitem[{\citenamefont{Uecker et~al.}(2006)\citenamefont{Uecker, Wilke,
  Schlom, Velickov, Reiche, Polity, Bernhagen, and Rossberg}}]{uecker-1}
\bibinfo{author}{\bibfnamefont{R.}~\bibnamefont{Uecker}},
  \bibinfo{author}{\bibfnamefont{H.}~\bibnamefont{Wilke}},
  \bibinfo{author}{\bibfnamefont{D.}~\bibnamefont{Schlom}},
  \bibinfo{author}{\bibfnamefont{B.}~\bibnamefont{Velickov}},
  \bibinfo{author}{\bibfnamefont{P.}~\bibnamefont{Reiche}},
  \bibinfo{author}{\bibfnamefont{A.}~\bibnamefont{Polity}},
  \bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Bernhagen}},
  \bibnamefont{and} \bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Rossberg}},
  \bibinfo{journal}{J. Cryst. Growth} \textbf{\bibinfo{volume}{295}},
  \bibinfo{pages}{84} (\bibinfo{year}{2006}).

\bibitem[{\citenamefont{Uecker et~al.}(2008)\citenamefont{Uecker, Velickov,
  Klimm, Bertram, Bernhagen, Rabe, Albrecht, Fornari, and Schlom}}]{uecker-2}
\bibinfo{author}{\bibfnamefont{R.}~\bibnamefont{Uecker}},
  \bibinfo{author}{\bibfnamefont{B.}~\bibnamefont{Velickov}},
  \bibinfo{author}{\bibfnamefont{D.}~\bibnamefont{Klimm}},
  \bibinfo{author}{\bibfnamefont{R.}~\bibnamefont{Bertram}},
  \bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Bernhagen}},
  \bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Rabe}},
  \bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Albrecht}},
  \bibinfo{author}{\bibfnamefont{R.}~\bibnamefont{Fornari}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{D.}~\bibnamefont{Schlom}},
  \bibinfo{journal}{J. Cryst. Growth} \textbf{\bibinfo{volume}{310}},
  \bibinfo{pages}{2649} (\bibinfo{year}{2008}).

\bibitem[{srz()}]{srzro}
\bibinfo{note}{The SrZrO$_3$, SrHfO$_3$, and LaScO$_3$ single crystals were
  grown by float-zone by Dima Souptel and Anatoly Balbashov of the Moscow Power
  Engineering Institute, Moscow, Russia. For details on the growth parameters
  see D. Souptel, G. Behr, and A.M. Balbashov, J. Cryst. Growth {\bf 236}, 583
  (2002).}

\bibitem[{\citenamefont{Newnham}(2005)}]{newnham}
\bibinfo{author}{\bibfnamefont{R.}~\bibnamefont{Newnham}},
  \emph{\bibinfo{title}{Properties of Materials: Anisotropy, Symmetry,
  Structure}} (\bibinfo{publisher}{Oxford University Press, Oxford},
  \bibinfo{year}{2005}).

\bibitem[{\citenamefont{Gesing et~al.}(2009)\citenamefont{Gesing, Uecker, and
  Buhl}}]{gesing}
\bibinfo{author}{\bibfnamefont{T.~M.} \bibnamefont{Gesing}},
  \bibinfo{author}{\bibfnamefont{R.}~\bibnamefont{Uecker}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{J.-C.} \bibnamefont{Buhl}},
  \bibinfo{journal}{Z. Kristallogr. NCS} \textbf{\bibinfo{volume}{224}},
  \bibinfo{pages}{365} (\bibinfo{year}{2009}).

\bibitem[{\citenamefont{Anderson et~al.}(1993)\citenamefont{Anderson,
  Greenwood, Taylor, and Poeppelmeier}}]{anderson-bord}
\bibinfo{author}{\bibfnamefont{M.~T.} \bibnamefont{Anderson}},
  \bibinfo{author}{\bibfnamefont{K.~B.} \bibnamefont{Greenwood}},
  \bibinfo{author}{\bibfnamefont{G.~A.} \bibnamefont{Taylor}},
  \bibnamefont{and} \bibinfo{author}{\bibfnamefont{K.~R.}
  \bibnamefont{Poeppelmeier}}, \bibinfo{journal}{Prog. Sol. St. Chem.}
  \textbf{\bibinfo{volume}{22}}, \bibinfo{pages}{197 } (\bibinfo{year}{1993}).

\bibitem[{\citenamefont{Liferovich and Mitchell}(2004)}]{liferovich-exp}
\bibinfo{author}{\bibfnamefont{R.~P.} \bibnamefont{Liferovich}}
  \bibnamefont{and} \bibinfo{author}{\bibfnamefont{R.~H.}
  \bibnamefont{Mitchell}}, \bibinfo{journal}{J. Phys. Chem. Solids}
  \textbf{\bibinfo{volume}{177}}, \bibinfo{pages}{2188 }
  (\bibinfo{year}{2004}).

\bibitem[{\citenamefont{Velickov et~al.}(2007)\citenamefont{Velickov,
  Kahlenberg, Bertram, and Bernhagen}}]{velickov-exp}
\bibinfo{author}{\bibfnamefont{B.}~\bibnamefont{Velickov}},
  \bibinfo{author}{\bibfnamefont{V.}~\bibnamefont{Kahlenberg}},
  \bibinfo{author}{\bibfnamefont{R.}~\bibnamefont{Bertram}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Bernhagen}},
  \bibinfo{journal}{Z. Kristallogr.} \textbf{\bibinfo{volume}{9}},
  \bibinfo{pages}{466} (\bibinfo{year}{2007}).

\bibitem[{\citenamefont{Kennedy
  et~al.}(1999{\natexlab{a}})\citenamefont{Kennedy, Howard, and
  Chakoumakos}}]{kennedy-exp}
\bibinfo{author}{\bibfnamefont{B.~J.} \bibnamefont{Kennedy}},
  \bibinfo{author}{\bibfnamefont{C.~J.} \bibnamefont{Howard}},
  \bibnamefont{and} \bibinfo{author}{\bibfnamefont{B.~C.}
  \bibnamefont{Chakoumakos}}, \bibinfo{journal}{Phys. Rev. B}
  \textbf{\bibinfo{volume}{59}}, \bibinfo{pages}{4023}
  (\bibinfo{year}{1999}{\natexlab{a}}).

\bibitem[{\citenamefont{Kennedy
  et~al.}(1999{\natexlab{b}})\citenamefont{Kennedy, Howard, and
  Chakoumakos}}]{kennedy2-exp}
\bibinfo{author}{\bibfnamefont{B.~J.} \bibnamefont{Kennedy}},
  \bibinfo{author}{\bibfnamefont{C.~J.} \bibnamefont{Howard}},
  \bibnamefont{and} \bibinfo{author}{\bibfnamefont{B.~C.}
  \bibnamefont{Chakoumakos}}, \bibinfo{journal}{Phys. Rev. B}
  \textbf{\bibinfo{volume}{60}}, \bibinfo{pages}{2972}
  (\bibinfo{year}{1999}{\natexlab{b}}).

\bibitem[{\citenamefont{Velickov et~al.}(2008)\citenamefont{Velickov,
  Kahlenberg, Bertram, and Uecker}}]{velickov-tbsco}
\bibinfo{author}{\bibfnamefont{B.}~\bibnamefont{Velickov}},
  \bibinfo{author}{\bibfnamefont{V.}~\bibnamefont{Kahlenberg}},
  \bibinfo{author}{\bibfnamefont{R.}~\bibnamefont{Bertram}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{R.}~\bibnamefont{Uecker}},
  \bibinfo{journal}{Acta Crystallogr. Sect. E} \textbf{\bibinfo{volume}{64}},
  \bibinfo{pages}{i79} (\bibinfo{year}{2008}).

\bibitem[{\citenamefont{Ruiz-Trejo et~al.}(1999)\citenamefont{Ruiz-Trejo,
  Islam, and Kilner}}]{ruiz}
\bibinfo{author}{\bibfnamefont{E.}~\bibnamefont{Ruiz-Trejo}},
  \bibinfo{author}{\bibfnamefont{M.~S.} \bibnamefont{Islam}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{J.~A.} \bibnamefont{Kilner}},
  \bibinfo{journal}{Solid State Ionics} \textbf{\bibinfo{volume}{123}},
  \bibinfo{pages}{121 } (\bibinfo{year}{1999}).

\bibitem[{\citenamefont{Levin et~al.}(2003)\citenamefont{Levin, Amos, Bell,
  Farber, Vanderah, Roth, and Toby}}]{cazro}
\bibinfo{author}{\bibfnamefont{I.}~\bibnamefont{Levin}},
  \bibinfo{author}{\bibfnamefont{T.~G.} \bibnamefont{Amos}},
  \bibinfo{author}{\bibfnamefont{S.~M.} \bibnamefont{Bell}},
  \bibinfo{author}{\bibfnamefont{L.}~\bibnamefont{Farber}},
  \bibinfo{author}{\bibfnamefont{T.~A.} \bibnamefont{Vanderah}},
  \bibinfo{author}{\bibfnamefont{R.~S.} \bibnamefont{Roth}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{B.~H.} \bibnamefont{Toby}},
  \bibinfo{journal}{J. Solid State Chem.} \textbf{\bibinfo{volume}{175}},
  \bibinfo{pages}{170 } (\bibinfo{year}{2003}), ISSN \bibinfo{issn}{0022-4596}.

\bibitem[{ben()}]{bennett}
\bibinfo{note}{J.~W. Bennett, private communication.}

\bibitem[{\citenamefont{Bennett et~al.}(2008)\citenamefont{Bennett, Grinberg,
  and Rappe}}]{bennett-cazro}
\bibinfo{author}{\bibfnamefont{J.~W.} \bibnamefont{Bennett}},
  \bibinfo{author}{\bibfnamefont{I.}~\bibnamefont{Grinberg}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{A.~M.} \bibnamefont{Rappe}},
  \bibinfo{journal}{Chem. Mater} \textbf{\bibinfo{volume}{20}},
  \bibinfo{pages}{5134} (\bibinfo{year}{2008}).

\bibitem[{\citenamefont{Arnold et~al.}(2009)\citenamefont{Arnold, Knight,
  Morrison, and Lightfoot}}]{arnold}
\bibinfo{author}{\bibfnamefont{D.}~\bibnamefont{Arnold}},
  \bibinfo{author}{\bibfnamefont{K.}~\bibnamefont{Knight}},
  \bibinfo{author}{\bibfnamefont{F.}~\bibnamefont{Morrison}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{P.}~\bibnamefont{Lightfoot}},
  \bibinfo{journal}{Phys. Rev. Lett.} \textbf{\bibinfo{volume}{102}},
  \bibinfo{pages}{027602} (\bibinfo{year}{2009}).

\bibitem[{\citenamefont{Haumont et~al.}(2008)\citenamefont{Haumont, Kornev,
  Lisenkov, Bellaiche, Kreisel, and Dkhil}}]{haumont}
\bibinfo{author}{\bibfnamefont{R.}~\bibnamefont{Haumont}},
  \bibinfo{author}{\bibfnamefont{I.}~\bibnamefont{Kornev}},
  \bibinfo{author}{\bibfnamefont{S.}~\bibnamefont{Lisenkov}},
  \bibinfo{author}{\bibfnamefont{L.}~\bibnamefont{Bellaiche}},
  \bibinfo{author}{\bibfnamefont{J.}~\bibnamefont{Kreisel}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{B.}~\bibnamefont{Dkhil}},
  \bibinfo{journal}{Phys. Rev. B} \textbf{\bibinfo{volume}{78}},
  \bibinfo{pages}{134108} (\bibinfo{year}{2008}).

\bibitem[{\citenamefont{Berkstresser et~al.}(1993)\citenamefont{Berkstresser,
  Valentino, and Brandle}}]{berkstresser}
\bibinfo{author}{\bibfnamefont{G.~W.} \bibnamefont{Berkstresser}},
  \bibinfo{author}{\bibfnamefont{A.~J.} \bibnamefont{Valentino}},
  \bibnamefont{and} \bibinfo{author}{\bibfnamefont{C.~D.}
  \bibnamefont{Brandle}}, \bibinfo{journal}{J. Cryst. Growth}
  \textbf{\bibinfo{volume}{128}}, \bibinfo{pages}{684} (\bibinfo{year}{1993}).

\bibitem[{\citenamefont{Ovanesyan et~al.}(1999)\citenamefont{Ovanesyan,
  Petrosyan, Shirinyan, Pedrini, and Zhang}}]{ovanesyan}
\bibinfo{author}{\bibfnamefont{K.~L.} \bibnamefont{Ovanesyan}},
  \bibinfo{author}{\bibfnamefont{A.}~\bibnamefont{Petrosyan}},
  \bibinfo{author}{\bibfnamefont{G.~O.} \bibnamefont{Shirinyan}},
  \bibinfo{author}{\bibfnamefont{C.}~\bibnamefont{Pedrini}}, \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{L.}~\bibnamefont{Zhang}}, \bibinfo{journal}{J.
  Cryst. Growth} \textbf{\bibinfo{volume}{198}}, \bibinfo{pages}{497}
  (\bibinfo{year}{1999}).

\bibitem[{spo()}]{spoint}
\bibinfo{note}{The eigendisplacement of this unstable mode is very close to
  that of the $S$-point $(\frac{1}{2} \frac{1}{2} 0)$ phonon of the 20-atom
  \pbnm\ structure having a frequency of 39~cm$^{-1}$. However, this phonon
  remains inactive in the \pbnm\ structure because it does not appear at the
  $\Gamma$ point.}

\bibitem[{mul()}]{muller}
\bibinfo{note}{D. A. Muller, private communication.}

\end{thebibliography}
