Transport and magnetic properties in La0.67Ca0.33MnO3 thick films

被引：2
|
作者：
Hart, C [1 ]
Arés, O
Escudero, R
机构：
[1] Univ Havana, IMRE, Superconduct Lab, Havana, Cuba
[2] Univ Nacl Autonoma Mexico, Mat Res Inst, Low Temp Lab, Mexico City, DF, Mexico
来源：
MAGNETISM, MAGNETIC MATERIALS AND THEIR APPLICATIONS | 1999年 / 302-3卷
关键词：
manganites; colossal magnetoresistance; thick films;
D O I：
10.4028/www.scientific.net/MSF.302-303.144
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present transport and magnetic measurements in thick films of the perovskite La0.67Ca0.33MnO3 on alumina substrates, made by a conventional paint-on method. In our case the temperature dependence of resistance is characterized by the existence of a broad peak (at 180 K) far below the Curie temperature (240K). The samples show a strong ferromagnetism, while the magnetoresistance coefficient exhibits a general diminishing monotonic behavior with the temperature. We discuss these results, considering the magnetic disorder related with possible local variation of the Mn (4+) content and its relation with the transport properties.
引用
收藏
页码：144 / 148
页数：5
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