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Structure and magnetic properties of TbFe10.5−x MnxMo1.5 compounds |
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| Authors: | Shi-Qiang Yang Ping-hua Lin Yin-sheng Dong Zhen-hua Chen |
| Affiliation: | aCollege of Materials Science & Engineering, Hunan University, Changsha 410082, PR China bCollege of Materials Science & Engineering, Southeast University, Nanjing 210096, PR China cDepartment of Materials Science & Engineering, Hehai University, Nanjing 210009, PR China |
| Abstract: | The effects of Mn partial substitution for Fe in TbFe10.5Mo1.5 on the structure and magnetic properties were investigated. TbFe10.5−xMnxMo1.5 samples (x = 1.5, 2.0, 3.0, 4.0, 5.0) were prepared by means of arc-melting and subsequent vacuum annealing. The structure and magnetic properties of TbFe10.5−xMnxMo1.5 compounds were investigated by X-ray powder diffraction and magnetic properties measurements. The following conclusions were obtained: all the TbFe10.5−xMnxMo1.5 compounds studied crystallize in the ThMn12-type structure; the unit-cell volume increases monotonically with increasing Mn concentration; a compensation temperature was observed in the magnetization-temperature curve of TbFe7.5Mn3Mo1.5 compounds. With increasing Mn concentration, the saturation magnetization at 4.4 K decreases to zero, and then increases again, the magnetic moments of the transition-metal sublattice of TbFe10.5−xMnxMo1.5 compounds decrease monotonically. |
| Keywords: | Intermetallic compounds Magnetic materials ThMn12-type structure Saturation magnetization Rare earths |
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