Impact of stress on oxygen vacancy ordering in epitaxial (La0.5Sr0.5)CoO3-partial derivative thin films

被引：83

作者：

Klenov, DO

Donner, W

Foran, B

Stemmer, S ^{[1
]}

机构：

[1] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA

[2] Univ Houston, Dept Phys, Houston, TX 77204 USA

[3] Int Sematech, Austin, TX 78741 USA

来源：

APPLIED PHYSICS LETTERS | 2003年 / 82卷 / 20期

关键词：

D O I：

10.1063/1.1575503

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We investigate oxygen vacancy ordering in epitaxial (La0.5Sr0.5)CoO3-partial derivative thin films grown by sputter deposition on (001) LaAlO3 and (001) SrTiO3. After annealing at 500degreesC under oxygen partial pressures greater than those used during deposition, films transform to a long-range oxygen vacancy ordered structure with orthorhombic symmetry. Observed orientation variants of the oxygen vacancy ordered structures are different for the two substrates. We discuss the relationship between film stress due to lattice and thermal mismatch with the substrate, and vacancy ordering. (C) 2003 American Institute of Physics.

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页码：3427 / 3429

页数：3

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