Ferroelectricity of perovskites under pressure.
作者信息
Kornev Igor A, Bellaiche L, Bouvier P, Janolin P-E, Dkhil B, Kreisel J
机构信息
Physics Department, University of Arkansas, Fayetteville, Arkansas 72701, USA.
出版信息
Phys Rev Lett. 2005 Nov 4;95(19):196804. doi: 10.1103/PhysRevLett.95.196804. Epub 2005 Oct 31.
Abstract
Ab initio simulations and experimental techniques are combined to reveal that, unlike what was commonly accepted for more than 30 years, perovskites and related materials enhance their ferroelectricity as hydrostatic pressure increases above a critical value. This unexpected high-pressure ferroelectricity is different in nature from conventional ferroelectricity because it is driven by an original electronic effect rather by long-range interactions.
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