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<TC时,样品进入自旋团簇玻璃态,低温时显示出亚铁磁;样品在TC以上温区发生了相分离;M-T曲线在TN附近出现了奇特的磁化强度峰,认为该峰归因于La(Dy)亚晶格磁畴的旋转。
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.
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2008年第1期46-49,共4页
Chinese Journal of Rare Metals
基金
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)
关键词
钙钛矿锰氧化物
磁性质
稀土
perovskite manganite
magnetic property
rare earths
