Effect of strontium deficiency on the transport and magnetic properties of Pr0.7Sr0.3MnO3

被引：44

作者：

Abou-Ras, D

Boujelben, W

Cheikh-Rouhou, A

Pierre, J

Renard, JP

Reversat, L

Shimizu, K

机构：

[1] Univ Paris 11, CNRS, UMR 7622, Inst Elect Fondamentale, F-91405 Orsay, France

[2] CNRS, Lab Louis Neel, F-38042 Grenoble, France

[3] Fac Sci Sfax, Phys Mat Lab, Sfax 3018, Tunisia

[4] Toyama Univ, Fac Educ, Toyama 9308555, Japan

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2001年 / 233卷 / 03期

关键词：

ferromagnetism; colossal magnetoresistance; nuclear magnetic resonance; metal-insulator transition;

D O I：

10.1016/S0304-8853(01)00273-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ceramic samples of Pr0.7Sr0.3 (x)square xMnO3 with x less than or equal to0.2 have been investigated by various techniques including Mn-55 nuclear magnetic resonance. SQUID magnetometry, resistivity and magneto resistance measurements. On increasing x, the samples remain ferromagnetic at a low temperature with a decreasing Curie temperature, but a metal-insulator transition is observed. Besides, a positive magneto resistance (MR) at very low temperatures with respect to a negative colossal MR at high temperatures is observed in the Pr(0.7)Sr(0.2)square 0.1MnO3 sample. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：147 / 154

页数：8

共 19 条

[1] CONSIDERATIONS ON DOUBLE EXCHANGE [J].