Low temperature magnetotransport properties of La0.55Ho0.15Sr0.3MnO3

被引：0
|
作者：
de Araújo, AEP
Machado, FLA
Rodrigues, AR
Nigam, AK
Pinto, R
机构：
[1] Univ Fed Pernambuco, Dept Fis, BR-50670901 Recife, PE, Brazil
[2] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India
来源：
PHYSICA B-CONDENSED MATTER | 2002年 / 320卷 / 1-4期
关键词：
manganites; spin glassy; magnetotransport;
D O I：
10.1016/S0921-4526(02)00622-1
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Magnetotransport data measured in thin films of La0.55Ho0.15Sr0.3MnO3 down to very low temperatures (0.25 K) are reported. The samples presented colossal magnetoresistance with a T-C close to 200 K. A minimum in the resistance vs. T curve and a drop in the ZFC magnetization were also observed. It was also found a T-dependent relaxation effect after the magnetic field was either applied or removed. These results can be understood within the framework where electronic scattering occurs across magnetic domain walls in a reentrant spin-glassy-like phase. (C) 2002 Elsevier Science B.V. All rights reserved.
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页码：67 / 70
页数：4
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