Bound electrical charges in BaTiO3 ferroelectric thin films: Evidence for spontaneous polarization

Zhiming Huang; Jianqiang Xue; Shijian Liu; Yun Hou; Junhao Chu; D. H. Zhang

doi:10.1103/PhysRevB.73.212104

Bound electrical charges in BaTiO3 ferroelectric thin films: Evidence for spontaneous polarization

Zhiming Huang^*
, Jianqiang Xue
, Shijian Liu
, Yun Hou
, Junhao Chu
, D. H. Zhang

^*此作品的通讯作者

CAS - Shanghai Institute of Technical Physics
Nanyang Technological University

科研成果: 期刊稿件 › 文章 › 同行评审

8 引用（Scopus）

摘要

The evolution of bound electrical charges (BECs) (electronical plus ionic) is probed in BaTiO3 thin films with temperatures ranging from 20 to 150°C. High accurate infrared spectroscopic ellipsometry indicates an obvious BEC decrease with a temperature increase above the Curie temperature of the films. Spontaneous polarization is given in terms of BECs, and its amplitude depends on the BEC ionic character. Our results provide an experimental tool for the quantitative predication of the spontaneous polarization in ferroelectric thin films.

源语言	英语
文章编号	212104
期刊	Physical Review B - Condensed Matter and Materials Physics
卷	73
期	21
DOI	https://doi.org/10.1103/PhysRevB.73.212104
出版状态	已出版 - 2006
已对外发布	是

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AU - Xue, Jianqiang

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AU - Hou, Yun

AU - Chu, Junhao

AU - Zhang, D. H.

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AB - The evolution of bound electrical charges (BECs) (electronical plus ionic) is probed in BaTiO3 thin films with temperatures ranging from 20 to 150°C. High accurate infrared spectroscopic ellipsometry indicates an obvious BEC decrease with a temperature increase above the Curie temperature of the films. Spontaneous polarization is given in terms of BECs, and its amplitude depends on the BEC ionic character. Our results provide an experimental tool for the quantitative predication of the spontaneous polarization in ferroelectric thin films.

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Bound electrical charges in BaTiO3 ferroelectric thin films: Evidence for spontaneous polarization

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