Lattice dynamics and origin of ferroelectricity in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">BaTiO</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>: Linearized-augmented-plane-wave total-energy calculations
R. E. Cohen(Carnegie Institution for Science), Henry Krakauer(United States Naval Research Laboratory)
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