| RFe7Mn4Ti化合物的结构和磁性(R=Y,Tb,Dy,Ho,Er) |
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| 引用本文： | 杨石强,林萍华,盛晓波,董寅生,杨素萍.RFe7Mn4Ti化合物的结构和磁性(R=Y,Tb,Dy,Ho,Er)[J].东南大学学报,2003,19(2). |
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| 作者姓名： | 杨石强 林萍华 盛晓波 董寅生 杨素萍 |
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| 作者单位： | 东南大学机械工程系 南京210096
(杨石强，林萍华，盛晓波，董寅生)，东南大学机械工程系 南京210096(杨素萍) |
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| 基金项目： | ApplicationScienceFoundationofJiangsuProvinceofChina (BJ970 30 ) |
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| 摘 要： | 研究了Mn部分替代RFe11Ti中的Fe对化合物结构和磁性的影响 .利用真空电弧熔炼和真空热处理制备RFe7Mn4 Ti(R =Y ,Tb ,Dy ,Ho和Er)化合物样品 .室温粉末样品的X射线衍射和热磁曲线测量表明 :所有这些化合物都具有单ThMn12 型结构 ,且具有良好的单相性 ,其晶格常数和单胞体积随着稀土元素的不同而变化 .在DyFe7Mn4 Ti和HoFe7Mn4 Ti化合物的热磁曲线上出现了明显的补偿特征 ,补偿温度分别约为 12 3K和 90K .同时给出了这些化合物的居里温度、饱和磁化强度及每单位分子式的饱和磁矩 .
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| 关 键 词： | 金属间化合物 ThMn12结构 饱和磁化强度 稀土 |
Structure and magnetic properties of RFe7Mn4Ti compounds with R=Y, Tb, Dy,Ho, and Er |
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| YANG Shiqiang,Lin Pinghua,SHENG XiaoBo,Dong Yinsheng,Yang Suping.Structure and magnetic properties of RFe7Mn4Ti compounds with R=Y, Tb, Dy,Ho, and Er[J].Journal of Southeast University(English Edition),2003,19(2). |
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| Authors: | YANG Shiqiang Lin Pinghua SHENG XiaoBo Dong Yinsheng Yang Suping |
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| Abstract: | The effect of Mn substitution for partial Fe in RFe 11Ti on structure and magnetic properties of compounds was researched. RFe 7Mn 4Ti samples (R=Y,Tb,Dy,Ho,Er) were prepared by means of vacuum arc-melting and subsequent vacuum annealing. The structure and magnetic properties of RFe 7Mn 4Ti compounds were investigated by X-ray powder diffraction and magnetic measurements. The following conclusions were obtained: all the RFe tMn 4Ti compounds crystallize in the ThMn 12-type structure. The lattice constants and the unit-cell volume changed with the increase of atomic number for R=Y, Tb, Dy, Ho, and Er. The compensation characters appear for the DyFe 7Mn 4Ti and HoFe 7Mn 4Ti compounds, and the compensation temperatures were about 123 K and 90 K, respectively. The Curie temperature, the saturation magnetization, and saturation moment of RFe 7Mn 4Ti compounds were given. |
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| Keywords: | intermetallic compounds ThMn 12-type structure saturation magnetization rare earth |
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