Extraordinary colossal magnetoresistance in La0.67Ca0.33Mn1-xCrxO3 (x ≤ 0.3)

被引：10
作者：
Sun, Y [1 ]
Tong, W [1 ]
Xu, XJ [1 ]
Zhang, YH [1 ]
机构：
[1] Univ Sci & Technol China, Struct Res Lab, Hefei 230026, Peoples R China
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2001年 / 231卷 / 2-3期
基金：
中国国家自然科学基金;
关键词：
colossal magnetoresistance; perovskite; manganite; double exchange; cluster glass;
D O I：
10.1016/S0304-8853(01)00155-X
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The magnetic and magnetotransport properties of La0.67Ca0.33Mn1-xCrxO3 (x less than or equal to 0.3) perovskites have been studied. It was found that Cr doping is impotent in driving Curie temperature T, but brings about cluster glass behaviors. Moreover, the substitution with Cr on Mn sites introduces extraordinary electrical transport and colossal magnetoresistance (CMR) behavior, characterized by double peaks. As a result, the temperature range of CMR response is greatly broadened. These results suggest that Cr doping could be a potent way in tuning CMR. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：195 / 198
页数：4
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