[1] Yang Shiqiang, Lin Pinghua, Sheng Xiaobo, Dong Yinsheng, et al. Structure and magnetic properties of RFe7Mn4Ticompounds with R=Y, Tb, Dy, Ho, and Er [J]. Journal of Southeast University (English Edition), 2003, 19 (2): 146-148. [doi:10.3969/j.issn.1003-7985.2003.02.010]

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Structure and magnetic properties of RFe₇Mn₄Ticompounds with R=Y, Tb, Dy, Ho, and Er()

RFe₇Mn₄Ti化合物的结构和磁性(R=Y, Tb, Dy, Ho, Er)

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

19

Issue:

2003 2

Page:

146-148

Research Field:

Mathematics, Physics, Mechanics

Publishing date:

2003-06-30

Info

Title:

Structure and magnetic properties of RFe₇Mn₄Ticompounds with R=Y, Tb, Dy, Ho, and Er

RFe₇Mn₄Ti化合物的结构和磁性(R=Y, Tb, Dy, Ho, Er)

Author(s):

Yang Shiqiang;  Lin Pinghua;  Sheng Xiaobo;  Dong Yinsheng;  Yang Suping

Department of Mechanical Engineering, Southeast University, Nanjing 210096, China

杨石强;  林萍华;  盛晓波;  董寅生;  杨素萍

东南大学机械工程系, 南京 210096

Keywords:

intermetallic compounds;  ThMn₁₂-type structure;  saturation magnetization;  rare earth

金属间化合物;  ThMn₁₂结构;  饱和磁化强度;  稀土

PACS:

O482.54

DOI:

10.3969/j.issn.1003-7985.2003.02.010

Abstract:

The effect of Mn substitution for partial Fe in RFe₁₁Ti on structure and magnetic properties of compounds was researched. RFe₇Mn₄Ti 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 RFe₇Mn₄Ti compounds were investigated by X-ray powder diffraction and magnetic measurements. The following conclusions were obtained: all the RFetMn₄Ti compounds crystallize in the ThMn₁₂-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 DyFe₇Mn₄Ti and HoFe₇Mn₄Ti compounds, and the compensation temperatures were about 123 K and 90 K, respectively. The Curie temperature, the saturation magnetization, and saturation moment of RFe₇Mn₄Ti compounds were given.

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, 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DyFe₇Mn₄Ti和HoFe₇

References:

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Memo

Memo:

Biographies: Yang Shiqiang(1966—), male, graduate; Lin Pinghua(corresponding author), male, doctor, professor, phlin@hhu.edu.cn.

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