| RFe7Mn4Ti化合物的结构和磁性 |
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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[J]. 功能材料, 2003, 34(6): 640-641 |
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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,江苏,南京,210096;东南大学,机械工程系,江苏,南京,210096;东南大学,机械工程系,江苏,南京,210096;东南大学,机械工程系,江苏,南京,210096;东南大学,机械工程系,江苏,南京,210096 |
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| 基金项目： | 江苏省应用研究基础项目，BJ97030， |
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| 摘 要： | 利用真空电弧熔炼和真空热处理制备RFe7Mn4Ti(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．其晶格常数a、c和单胞体积V随着稀土元素的不同而变化。在DyFe7MmTi和HoFe7Mn4Ti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123K和90K。本文还给出了这些化合物的居里温度和饱和磁化强度。
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| 关 键 词： | 金属间化合物 ThMn12结构 饱和磁化强度 补偿温度 |
| 文章编号： | 1001-9731(2003)06-0640-02 |
| 修稿时间： | 2002-11-25 |
Structure and magnetic properties of RFe7Mn4Ti compounds with R=Y, Tb, Dy, Ho, Er |
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| YANG Shi-qiang,LIN Ping-hua,SHENG Xiao-bo,DONG Yin-sheng,YANG Su-ping. Structure and magnetic properties of RFe7Mn4Ti compounds with R=Y, Tb, Dy, Ho, Er[J]. Journal of Functional Materials, 2003, 34(6): 640-641 |
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| Authors: | YANG Shi-qiang LIN Ping-hua SHENG Xiao-bo DONG Yin-sheng YANG Su-ping |
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| Abstract: | 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 (R=Y, Tb, Dy, Ho, Er) were investigated by X-ray powder diffraction and magnetic measurements. The following conclusions were obtained: all the RFe_4Mn_4Ti compounds crystallize into the ThMn_(12)- type structure. The lattice constants _a, c_ and the unit-cell volume _V_ change with the 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 temperature were about 123K and 90K respectively. The Curie temperature and the saturation magnetization of RFe_7Mn_4Ti compounds were also given in this paper. |
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| Keywords: | intermetallic compounds ThMn_(12)-type structure saturation magnetization compensation temperature |
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