Colossal magnetoresistance of spin-glass perovskite La0.67Ca0.33Mn0.9Fe0.1O3

被引：181

作者：

Cai, JW

Wang, C

Shen, BG

Zhao, JG

Zhan, WS

机构：

[1] CHINESE ACAD SCI, STATE KEY LAB MAGNETISM, INST PHYS, BEIJING 100080, PEOPLES R CHINA

[2] CHINESE ACAD SCI, CTR CONDENSED MATTER PHYS, BEIJING 100080, PEOPLES R CHINA

[3] UNIV SCI & TECHNOL BEIJING, DEPT PHYS CHEM, BEIJING 100083, PEOPLES R CHINA

来源：

APPLIED PHYSICS LETTERS | 1997年 / 71卷 / 12期

关键词：

D O I：

10.1063/1.120017

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The magnetic and magnetotransport properties of the perovskite La0.67Ca0.33Mn0.9Fe0.1O3 have been investigated, and the spin-glass behavior with a spin freezing temperature of 42 K has been well confirmed for this compound. A metal-to-insulator transition and colossal magnetoresistance have been observed near its spin freezing temperature; besides, the insulator behavior has been found to reappear at lower temperature. The formation of ferromagnetic and antiferromagnetic clusters and the competition between them with the introduction of Fe3+ ions, which do not participate in the double-exchange process, have been suggested to explain the experimental results. (C) 1997 American Institute of Physics.

引用

页码：1727 / 1729

页数：3

共 30 条

[1] Magnetic properties and colossal magnetoresistance of La(Ca)MnO3 materials doped with Fe [J].