Microstructural development of BaTiO3 heteroepitaxial thin films by hydrothermal synthesis

被引:36
作者
Chien, AT [1 ]
Zhao, L
Colic, M
Speck, JS
Lange, FF
机构
[1] Univ Calif Santa Barbara, Mat Res Lab, Santa Barbara, CA 93106 USA
[2] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA
基金
美国国家科学基金会;
关键词
D O I
10.1557/JMR.1998.0081
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The hydrothermal growth of epitaxial BaTiO3 thin films on single-crystal SrTiO3 substrates occurs by the island growth mode. The aqueous solution chemistry is found to control interfacial characteristics and plays an important role in controlling film formation and faceting, Island faceting can be changed by the introduction of additional cations during synthesis. Electrophoretic data, confirmed by adsorption measurements, show that barium is a potential determining counterion and adsorbs on SrTiO3 surfaces. Initial electrical measurements show that the BaTiO3 films have a dielectric constant of 141 with a loss tangent of 0.9 that decreases with heat treatment.
引用
收藏
页码:649 / 659
页数:11
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