Effects of nonstoichiometry on the properties of electron-doped manganite Pr0.1Ca0.9MnO3

被引：2

作者：

Xiang, Yang ^{[1
]}

Liu, Zhiguo ^{[1
]}

Zhou, Bo ^{[1
]}

Chen, Chuanwen ^{[1
]}

Wang, Xianjie ^{[1
]}

Huang, Xiqiang ^{[1
]}

Sui, Yu ^{[1
,2
]}

Lue, Zhe ^{[1
]}

Su, Wenhui ^{[1
,2
]}

机构：

[1] Harbin Inst Technol, Ctr Condensed Matter Sci & Technol CCMST, Dept Phys, Harbin 150080, Peoples R China

[2] Acad Sinica, Int Ctr Mat Phys, Shenyang 110015, Peoples R China

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2009年 / 321卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Manganite; Ferromagnetism; Cluster glass; PEROVSKITES; MAGNETORESISTANCE; PR1-XCAXMNO3;

D O I：

10.1016/j.jmmm.2008.10.029

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Mn4+-rich perovskite manganites (nominal composition: Pr0.1Ca0.9MnO3) were synthesized by using a citric acid method and sintered at different temperatures (800, 900, 1000, and 1300 degrees C) to adjust the concentration of charge carrier. All the samples are found to be in the cluster glass state at low temperature, as indicated by dc and ac magnetization. With the increase of sintering temperature, the ferromagnetic component in samples increases at first, and attains a maximum at 1000 degrees C, then decreases again at 1300 degrees C, which could be well interpreted by the change of charge carrier concentration induced by nonstoichiometry, consistent with the trend on the phase diagram. However, nonstoichiometry breaks long-range Mn-O-Mn interaction, resulting in the variance from the phase diagram. (C) 2008 Published by Elsevier B.V.

引用

页码：1188 / 1191

页数：4

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