Cr-doping-induced phase separation and MR effect in the manganite Pr0.5Ca0.5Mn1-xCrxO3 system

被引：17

作者：

Cao, Shixun ^{[1
]}

Li, Wenjuan ^{[1
]}

Zhang, Jincang ^{[1
]}

Kang, Baojuan ^{[1
]}

Gao, Tian ^{[1
]}

Jing, Chao ^{[1
]}

机构：

[1] Shanghai Univ, Dept Phys, Shanghai 200444, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2007年 / 102卷 / 05期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1063/1.2776161

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Systematic study on magnetic and electrical transport properties has been performed on the Cr-doped Pr0.5Ca0.5Mn1-xCrxO3 (x=0, 0.03, 0.05, 0.07, 0.10) system. The results show that Cr-doping leads to melting of the charge ordering and induces phase separation. For the sample x=0.10, reentrant spin glass behavior is observed and the slowing down model is applicable. The reentrant spin glass behavior and the phase coexistence of charge ordering (CO) and the ferromagnetic metal phase (FMM) are responsible for the changing magnetoresistance effect of the system. The phase separation or coexistence of the CO and FM phase induced by Cr-doping plays an important role in the low temperature properties for the system. (C) 2007 American Institute of Physics.

引用

页数：6

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