Magnetic Transitions and Magnetoresistance of Y1—xDyxMn6Sn6(x=0.2 and 0.3) |
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作者姓名: | ZHAOTong-Yun SHENBao-Gen ZHANGShao-Ying YAOJin-Lei ZHANGLi-Gang LIYun-Bao |
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作者单位: | [1]StateKeyLaboratoryforMagnetism,InstituteofPhysics,ChineseAcademyofSciences,Beijing100080 [2]DepartmentofAppliedPhysics,UniversityofScienceandTechnologyofWuhan,Wuhan430081 |
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摘 要: | Magnetic transitions and magnetoresistance of HfFe6Ge6-type Y1-xDyxMn6Sn6 (x=0.2 and 0.3) have been investigated in the temperature range of 5-380K. It was found that the strong exchange interaction between the Dy and Mn sublattices results in incomplete ferromagnetism at low temperatures. At higher temperatures, the metamagnetic transition from an antiferromagnetic state to a ferrimagnetic state can be induced by a fairly small threshold field or by increasing temperature. The magnetic transition is accompanied by a large magnetoresistance effect of about -29% and -16% at 5K for x=0.2 and 0.3, respectively.
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关 键 词: | 磁性材料 磁致电阻 Y1-xDyxMn6Sn6化合物 钇镝锰锡化合物 X射线分析 顺磁性 亚铁磁性 |
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