The effect of annealing on the magnetoresistance of polycrystalline (La-Y-Ca)MnO3 perovskites

被引：23
|
作者：
Nossov, A
Pierre, J
Vassiliev, V
Ustinov, V
机构：
[1] CNRS,LAB LOUIS NEEL,F-38042 GRENOBLE 9,FRANCE
[2] RUSSIAN ACAD SCI,INST SOLID STATE CHEM,EKATERINBURG 620219,RUSSIA
[3] RUSSIAN ACAD SCI,INST PHYS MET,EKATERINBURG 620219,RUSSIA
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 1996年 / 8卷 / 44期
关键词：
D O I：
10.1088/0953-8984/8/44/006
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The magnetization, resistivity and magnetoresistance of yttrium-doped polycrystalline La0.6Y0.7Ca0.33MnO3 have been studied as a function of annealing conditions. The magnetoresistance amplitude depends upon the annealing time, with an optimum corresponding to 12 h annealing at 1200 degrees C under oxygen. Different contributions to the magnetoresistance are separated; the first is related to the technical magnetization, the second, dominant one, to the influence of the total magnetic induction on the band splitting and the spin correlation function.
引用
收藏
页码：8513 / 8524
页数：12
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