Evolution of transport and magnetic properties with dysprosium doping in La0.7-xDyxSr0.3MnO3 (x=0-0.4)

被引：24
|
作者：
Mitra, C [1 ]
Raychaudhuri, P [1 ]
Dhar, SK [1 ]
Nigam, AK [1 ]
Pinto, R [1 ]
Pattalwar, SM [1 ]
机构：
[1] Tata Inst Fundamental Res, NCGINSM, Colaba 400005, Mumbai, India
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1999年 / 192卷 / 01期
关键词：
colossal magnetoresistance (CMR); perovskite manganites; magnetization; spin-glasses;
D O I：
10.1016/S0304-8853(98)00388-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report the magnetic and transport properties in the series La0.7-xDyxSr0.3MnO3 (0.0 less than or equal to x less than or equal to 0.4). Susceptibility and resistivity studies show that La0.7-xDyxSr0.3MnO3 for x < 0.35 order ferromagnetically and show metal-insulator transition. Magnetic and transport studies show a gradual increase of antiferromagnetic interaction with x, ultimately leading to a spin-glass-like state for x > 0.3 compounds. The sample with x = 0.4 shows a dramatic increase in resistivity near the spin-glass ordering temperature T-SG. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：130 / 136
页数：7
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