Epitaxial-strain effect on charge/orbital order in Pr0.5Ca0.5MnO3 films

被引：38

作者：

Okuyama, D. ^{[1
]}

Nakamura, M. ^{[1
]}

Wakabayashi, Y. ^{[2
]}

Itoh, H. ^{[3
]}

Kumai, R. ^{[4
]}

Yamada, H. ^{[4
]}

Taguchi, Y. ^{[1
]}

Arima, T. ^{[5
]}

Kawasaki, M. ^{[1
,6
]}

Tokura, Y. ^{[1
,3
,4
]}

机构：

[1] RIKEN, ASI, Cross Correlated Mat Res Grp, Wako, Saitama 3510198, Japan

[2] Osaka Univ, Grad Sch Engn Sci, Toyonaka, Osaka 5608531, Japan

[3] Univ Tokyo, Dept Appl Phys, Japan Sci & Technol Agcy, Multiferro Project,ERATO, Tokyo 1138656, Japan

[4] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058562, Japan

[5] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

[6] Tohoku Univ, WPI AIMR, Sendai, Miyagi 9808577, Japan

来源：

APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 15期

关键词：

MAGNETORESISTIVE MANGANITES; MAGNETIC-FIELD; THIN-FILMS; PHASE; TRANSITION;

D O I：

10.1063/1.3246158

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Effect of growth orientation on charge- and orbital-ordering (CO-OO) phenomena has been studied for Pr0.5Ca0.5MnO3 epitaxial thin films fabricated on (LaAlO3)(0.3)-(SrAl0.5Ta0.5O3)(0.7) (LSAT) substrates by means of resistivity, synchrotron x-ray diffraction, and polarized optical microscopy measurements. CO-OO transition is observed around 220 K for a film grown on an LSAT (011) substrate [(011) film], similarly to a bulk sample, while a film grown on a (001) plane of LSAT [(001) film] shows much higher transition temperature around 300 K. The domain size of OO is approximately three times as large in the (011) film as in the (001) film. These results demonstrate that various properties of CO-OO phenomena can be controlled with the growth orientation via the epitaxial strain from the substrate. (C) 2009 American Institute of Physics. [doi:10.1063/1.3246158]

引用

页数：3

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