Controlled cation stoichiometry in pulsed laser deposition-grown BaTiO3 epitaxial thin films with laser fluence

被引：59

作者：

Kan, Daisuke ^{[1
]}

Shimakawa, Yuichi ^{[1
]}

机构：

[1] Kyoto Univ, Inst Chem Res, Kyoto 6110011, Japan

来源：

APPLIED PHYSICS LETTERS | 2011年 / 99卷 / 08期

关键词：

D O I：

10.1063/1.3628461

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We investigated effects of the laser fluence on structural and ferroelectric properties in BaTiO3 epitaxial thin films grown by pulsed laser deposition. We find that the low laser fluence causes the cation non-stoichiometry in the films. X-ray diffraction and ferroelectric hysteresis loop measurements reveal the strong impacts of the fluence-dependent cation non-stoichiometry on the structural and ferroelectric properties of the films. The ferroelectricity is observed for the films grown with the fluence larger than 1.3 J/cm(2), where the cation ratio is kept close to stoichiometric. These results demonstrate that the cation stoichiometry controlled with the laser fluence plays an important role in determining the structural and ferroelectric properties in the BaTiO3 films. (C) 2011 American Institute of Physics. [doi:10.1063/1.3628461]

引用

页数：3

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