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

被引：24

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.

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页码：8513 / 8524

页数：12

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