| 固相反应法制备的Gd0.7Sr0.3MnO3粉末的磁学特性 |
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| 引用本文： | 金林虎,S.C.Yu,B.W.Lee,J.Y.Kim,姜炳植.固相反应法制备的Gd0.7Sr0.3MnO3粉末的磁学特性[J].低温物理学报,2011(5):386-389. |
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| 作者姓名： | 金林虎 S.C.Yu B.W.Lee J.Y.Kim 姜炳植 |
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| 作者单位： | 延边大学理学院物理系;Department of Physics;Chungbuk National University;Hankuk University of Foreign Studies; |
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| 摘 要： | 利用固相反应法制备了用Sr部分替换GdMnO3中Gd的锰基钙钛矿氧化物Gd0.7Sr0.3MnO3.X射线衍射表明其晶体结构为正交晶系,空间群为Pnma.通过测量样品在零场冷却和加场冷却下的磁化强度及磁化率随温度的变化曲线,得出样品显示亚铁磁特性,Mn和Gd两个子晶格相互反平行.根据居里-外斯定律得知其居里温度为61 ...
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| 关 键 词： | 钙钛矿锰氧化物 亚铁磁性 磁热效应 |
MAGNETIC PROPERTIES OF Gd_(0.7)Sr_(0.3)MnO_3 POWDERS PREPARED BY A SOLID STATE REACTION METHOD |
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| L.H.Jin S.C.Yu B.W.Lee J.Y.Kim B.Z.Jiang.MAGNETIC PROPERTIES OF Gd_(0.7)Sr_(0.3)MnO_3 POWDERS PREPARED BY A SOLID STATE REACTION METHOD[J].Chinese Journal of Low Temperature Physics,2011(5):386-389. |
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| Authors: | LHJin SCYu BWLee JYKim BZJiang |
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| Institution: | L.H.Jin1 S.C.Yu2 B.W.Lee3 J.Y.Kim3 B.Z.Jiang11Department of Physics,Yanbian University,Yanji,Jilin 133002,2Department of Physics,Chungbuk National University,Chungju 361-763,Republic of Korea3Department of Physics,Hankuk University of Foreign Studies,Yongin 449-771,Republic of Korea |
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| Abstract: | The gadolinium-based manganite GdMnO3,partially substituted by strontium at the cationic site,has been investigated through its crystallochemical and magnetic properties.The Gd0.7Sr0.3MnO3 powder sample crystallises in an orthorhombic perovskite-type structure(S.G.Pnma).Field Cold and Zero Field Cold measurements show that the powder sample can be described as a ferrimagnetic system.The Mn sublattice and the Gd sublattice are antiparallel each other,because of negative exchange interaction.According to Curi... |
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| Keywords: | Perovskite manganite Ferrimagnetism Magnetocaloric effect |
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