首页|Extrinsic Scaling Effects on the Dielectric Response of Grained BaTiO_3 Films

Extrinsic Scaling Effects on the Dielectric Response of Grained BaTiO_3 Films

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  • Trans Tech Publications Ltd
A set of gradient stresses is used in Landau thermodynamic theory to explain the dielectric diffusion of BaTiO_3 films grown on thick copper foils. Every grain in the films is treated as a single domain core that is surrounded by boundaries with low dielectric constant. The dielectric diffusion is mainly induced by the diffusive phase transition caused by the gradient stresses. The low dielectric constant boundaries suppress the peak value of the dielectric constant. The results agree with the experiments.

ferroelectricsthin filmgrain sizedielectric constant

Liben Li、Liqiu Su、Zhiqiang Zhen、XinZhong Li、Qingdong Chen、Tongwei Li

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School of Science, Henan University of Science and Technology, Luoyang 471003, China

Department of Electronic Information Engineering, Hebi College of Vocation and Technology, Hebi 458030, China

2010

10.4028/www.scientific.net/KEM.434-435.293

Key engineering materials

Key engineering materials

ISSN：1013-9826
年,卷(期)：2010.434/435
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