Suppression of structural and magnetotransport transitions in compressed Pr0.5Sr0.5MnO3 thin films resulting in colossal magnetoresistance effect

被引：18

作者：

Mercey, B ^{[1
]}

Hervieu, M ^{[1
]}

Prellier, W ^{[1
]}

Wolfman, J ^{[1
]}

Simon, C ^{[1
]}

Raveau, B ^{[1
]}

机构：

[1] Lab CRISMAT, UMR 6508, F-14050 Caen, France

来源：

APPLIED PHYSICS LETTERS | 2001年 / 78卷 / 24期

关键词：

D O I：

10.1063/1.1379592

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Thin films of Pr0.5Sr0.5MnO3 have been deposited on [100]-LaAlO3 using laser ablation. In contrast to the bulk compounds, such films do not exhibit any structural and magnetotransport transitions versus temperature; more particularly the A-type antiferromagnetic phase with the Fmmm structure which exists in the bulk below T-N = 135 K is suppressed, and the film is an insulator in the absence of a magnetic field. However a colossal magnetoresistance effect is observed, with resistance ratios much larger than in the bulk. These differences with respect to the bulk, are explained by the presence of substrate-induced strains. (C) 2001 American Institute of Physics.

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页码：3857 / 3859

页数：3

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