学术
稀土双掺杂锰氧化物La（0.5）Dy（0.2）Sr（0.3）MnO3的磁性质
王闻琦[1] 彭振生[1,2] 严国清[1] 毛强[1]
[1]宿州学院自旋电子与纳米材料安徽省重点实验室,安徽宿州234000 [2]中国科学技术大学结构分析重点实验室,安徽合肥230026
摘 要:
采用固相反应法制备了La0.5Dy0.2Sr0.3MnO3样品,通过M-T曲线、M-H曲线、ESR曲线研究了样品的磁性质。结果表明：在TC处样品经历了顺磁到铁磁的转变;当T[著者文摘]
文章出处:
《稀有金属》-2008年32卷1期 -46-49页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
0258-7076（2008）01-0046-04
Magnetic Property of Manganite La0.5Dy0.2Sr0.3MnO3 Doped with Double Rare-Earth
Wang Wenqi;Peng Zhensheng;Yan Guoqing;Mao Qiang（1.Anhui Key Laboratory of Spintranics and Nanomaterials;Suzhou College;Suzhou 234000;China;2.Structure Research Laboratoty;Science and Technology University of China;Hefei 230026;China）
Abstract:
The sample La0.5 Dy0.2 Sr0.3 MnO3 was prepared by solid-state reaction, and its magnetic properties were studied through the measurement of M-T curves, M-H curves and ESR curves of the sample. The results showed that the sample La0.5 Dy0.2 Sr0.3 MnO3 transformed from paramagnetic phase to ferromagnetic phase at Tc, and when T 〈 Tc, it was in the glass state of cluster-spin, the sample showed the ferrimagnetism; but if the temperature was higher than Tc, the phase separation occurred; a smart peak of magnetization strength caused by the rotation of La （Dy） sub-lattice magnetic domain was observed near by TN in the M-T curves.[著者文摘]
Key words:
perovskite manganite;magnetic property;rare earths
基金资助:
国家自然科学基金重点项目（19934003）;安徽省教育厅自然科学研究计划项目（2004Kj331）;安徽省高等学校自然科学研究项目（2005KJ234）;安徽省高等学校自然科学研究项目（2006kj266B）;宿州学院教授（博士）科研启动基金项目（2006jb02）资助
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