Phase diagrams of BaTiO3/SrTiO3 superlattices from first principles

被引：64

作者：

Lisenkov, Sergey ^{[1
]}

Bellaiche, L. ^{[1
]}

机构：

[1] Univ Arkansas, Dept Phys, Fayetteville, AR 72701 USA

来源：

PHYSICAL REVIEW B | 2007年 / 76卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.76.020102

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A first-principles-based technique is used to determine the temperature versus misfit strain phase diagram of epitaxially grown (001) BaTiO3/SrTiO3 superlattices of different periods. Short superlattices exhibit a phase diagram that resemble that of (001) BaTiO3 thin films under short-circuit-like conditions. On the other hand, original domain patterns with unusual atomistic features occurred in the longer superlattices. The reason behind such a dramatic difference between short and longer superlattices is discussed.

引用

页数：4

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