| R2Fe17—XAlXNy（R=Pr,Nd）化合物的结构和磁性 |
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| 作者姓名： | Enke T |
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| 作者单位： | 内蒙古师大物理系
(特古斯)，内蒙古师大物理系(恩克) |
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| 摘 要： | 研究了Al替代和渗N对二元合金R_2Fe_(17)(R=Pr,Nd)的结构和磁性的影响。X射线衍射表明所有的母合金及其氮化物都结晶为Th_2Zn_(17)型结构。Al替代Fe和渗氮都使晶胞体积增大。R_2Fe_(17-X)Al_X化合物的居里温度随x增大,但R_2Fe_(17-X)Al_X(Al_X)N_Y化合物的居里温度比纯R_2Fe_(17)N_Y化合物的居里温度要低。室温饱和磁化强度随x减小,而且R_2Fe_(17-X)Al_XN_Y化合物的易磁化方向仍在基面内。
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| 关 键 词： | 居里温度 氮化物 稀土永磁体 |
Structure and Magnetic Properties of R_2Fe_(17-X)Al_XN_Y Compounds |
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| Enke,T.Structure and Magnetic Properties of R_2Fe_(17-X)Al_XN_Y Compounds[J].Journal of Inner Mongolia Normal University(Natural Science Edition),1993(3):35-39. |
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| Authors: | Tegus Enke |
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| Institution: | Department of physics |
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| Abstract: | The effects of aluminum substitution and nitrogen absorption on the magnetic properties of the R_2Fe_(17) (R=pr,Nd) binary compounds have been studid. X-ray diffraction patterns showed that all the hosts as well as their nitrides crystallize in the rhombohedral Th_2Zn_(17)-type structure. Both the A1 replacement and nitrogen absorption result in an icreases of the unit cell volume. The Curie temperature of the R_2Fe_(17)_xA1_x compounds increases with increasing x. But the Curie temperature of the R_2Fe_(17)_xA1_xN_Y nitrides is smaller than that of corresponding R_2Fe_(17)N_y nitrides. The magnetization of the nitrides at room temperature decreases with x and the easy axis of magnetization for R_2Fe_(17)_xA1_xN_Y was also found to be in basal plane. |
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| Keywords: | Curie Temperature Nitrides Rare Earth Permanent Magnets |
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