Study on the size effect of the BaTiO3 nanowires by LGD theory

Jiawang Hong*, Daining Fang

*此作品的通讯作者

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

As the size of ferroelectric nanostructures decreases, the fundamental questions of the size dependence of the ferroelectric properties, and of their possible disappearance at a finite critical size, become crucial. In this paper, Landau-Ginzburg-Devonshire(LGD) theory is introduced to study the size-dependent ferroelectric properties of BaTiO3 nanowires. Our results demonstrate that the Curie temperature and mean polarization decrease with the reducing of nanowire diameters. We further show that these size effects are significant only when the nanowire diameters are less than 20nm, Above this, the ferroelectric behaviors of nanowires are almost the same as those of bulk materials and size effect can be neglected.

源语言英语
主期刊名Advances in Fracture and Materials Behavior - Selected, peer reviewed papers of the Seventh International Conference on Fracture and Strength of Solids (FEOFS2007)
出版商Trans Tech Publications
913-918
页数6
ISBN(印刷版)0878493999, 9780878493999
出版状态已出版 - 2008
已对外发布
活动7th International Conference on Fracture and Strength of Solids, FEOFS 2007 - Urumqi, 中国
期限: 27 8月 200729 8月 2007

出版系列

姓名Advanced Materials Research
33-37 PART 2
ISSN(印刷版)1022-6680

会议

会议7th International Conference on Fracture and Strength of Solids, FEOFS 2007
国家/地区中国
Urumqi
时期27/08/0729/08/07

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