Strain effect on phase transitions of BaTiO3 nanowires

被引：30
|
作者：
Wang, J. J. [1 ,2 ]
Eliseev, E. A. [3 ]
Ma, X. Q. [2 ]
Wu, P. P. [1 ,2 ]
Morozovska, A. N. [3 ]
Chen, Long-Qing [1 ]
机构：
[1] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA
[2] Univ Sci & Technol Beijing, Dept Phys, Beijing 100083, Peoples R China
[3] Natl Acad Sci Ukraine, UA-03028 Kiev, Ukraine
来源：
ACTA MATERIALIA | 2011年 / 59卷 / 19期
基金：
美国国家科学基金会;
关键词：
Nanocrystalline materials; Phase transformations; Ferroelectricity; Phenomenological simulation; BARIUM-TITANATE; DEPOLARIZATION FIELD; THIN-FILMS; FERROELECTRICS; MEMORIES; CRYSTALS; DIAGRAMS; NANORODS;
D O I：
10.1016/j.actamat.2011.08.015
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effects of strain on the phase transitions of BaTiO3 nanowires taking into account three components of polarization are studied by thermodynamic analysis based on the Landau theory. Similar to the strain effect on phase transitions in thin films, the mismatch strain between the nanowire and substrate governs the Curie temperature. The complete misfit strain temperature phase diagram shows six stable ferroelectric phases for BaTiO3 nanowires under different strain and temperature conditions. Published by Elsevier Ltd. on behalf of Acta Materialia Inc.
引用
收藏
页码：7189 / 7198
页数：10
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