Surface inhomogeneities and the electronic phase separated states in thin films of La_(0.35)Pr_(0.35)Ca_(0.3)MnO_3

J. Jeon; H. S. Alagoz; J. JungK. H. Chow

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Surface inhomogeneities and the electronic phase separated states in thin films of La_(0.35)Pr_(0.35)Ca_(0.3)MnO_3

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摘要

We have studied the effects of film thickness and surface inhomogeneities on the fluid and static phase separated states of La_(0.35)Pr_(0.35)Ca_(0.3)MnO_3 films grown on LaAlO_3 and SrTiO_3 substrates which provide compressive and tensile strain, respectively. The shapes and areas of the resistance versus magnetic field hysteresis loops were used to identify the type of phase separated state in the films. Atomic force microscopy revealed an increase of the relative surface roughness of the films with a decreasing thickness. The resultant distribution of the strain produces a dramatic enhancement of the inhomogeneous electronic phase separation as well as large changes in the dependence of the resistivity on magnetic field in the thinnest films deposited on both types of substrates. In contrast to thick films, the static phase separated state in the thinnest films is more inhomogeneous than the fluid phase separated one.

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《Journal of Applied Physics》 |2014年第23期|233907-1-233907-5|共5页
作者
J. Jeon; H. S. Alagoz; J. JungK. H. Chow;
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作者单位

Department of Physics, University of Alberta, Edmonton, Alberta T6G 2E1, Canada;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种英语
中图分类应用物理学;
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Surface inhomogeneities and the electronic phase separated states in thin films of La_(0.35)Pr_(0.35)Ca_(0.3)MnO_3

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