Metal-insulator transition and giant magnetoresistance in La1-xMnO3-delta thin films and superlattices

被引：3
|
作者：
Manoharan, SS
Hegde, MS
Satyalakshmi, KM
Prasad, V
Subramanyam, SV
机构：
[1] INDIAN INST SCI,DEPT MET,BANGALORE 560012,KARNATAKA,INDIA
[2] INDIAN INST SCI,DEPT PHYS,BANGALORE 560012,KARNATAKA,INDIA
来源：
THIN SOLID FILMS | 1996年 / 275卷 / 1-2期
关键词：
magnetic properties and measurements; metals; insulators; superlattices;
D O I：
10.1016/0040-6090(95)08024-4
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The first fabrication of self-doped La1-xMnO3-delta films which are unique among the other La(1-x)M(x)MnO(3) (M = Ca, Ba and Pb) thin films showing giant magnetoresistance is reported. Ag-doped La0.7MnO3-delta films were grown on LaAlO3[100] substrates. These films show ferromagnetic and metal-insulator transition at 220 K and exhibit giant magnetoresistance (GMR) with Delta R/R(o) = 85% and Delta R/R(H) > 550%. Without silver addition these self-doped films are non-magnetic, Enhancement in GMR up to 8% has been observed in superlattices having alternate magnetic and non-magnetic La1-xMnO3-delta layers.
引用
收藏
页码：244 / 246
页数：3
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