| Original Articles |
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Synthesis and Magnetic Properties of Gd3 (Fe, Co,
Cr)29 Compounds
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| WANG Wen-Quan1,2;WANG Jian-Li1;YANG Dong1;TANG Ning1;YANG Fu-Ming1;WU Guang-Heng1;JIN Han-Min2 |
| 1State Key Laboratory of Magnetism, Institute of
Physics, Chinese Academy of Sciences, Beijing 100080
2Department of Physics, Jilin university, Changchun 130023
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| Cite this article: |
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WANG Wen-Quan, WANG Jian-Li, YANG Dong et al 2001 Chin. Phys. Lett. 18 969-972 |
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Abstract Formation and magnetic properties of the Gd3Fe29-x-yCoxCry compounds have been investigated. It has been found that formation of single phase compounds Gd3Fe29-x-yCoxCry with Nd3(Fe,Ti)29-type structure depends strongly on the content of stabilizing element Cr, and the solid-solution limit of Co in Gd3Fe29-x-yCoxCry compounds increases with Cr content. Pure Co-based Gd3Co29-yCry compounds with Nd3(Fe,Ti)29-type structure have been successfully synthesized with y = 6.5 and 7.0. The Curie temperature Tc of Gd3Fe29-x-yCoxCry compounds increases with increasing Co content x at fixed y, whereas increase of the Cr content leads to an obvious decrease of Tc of the Gd3Co29-yCry compounds. Composition dependence of the saturation magnetization at 5 K reaches a maximum around x =7.5 and y = 4. It is worth noting that substitution of Co for Fe results in a significant change of magnetocrystalline anisotropy of the Gd3Fe29-x-yCoxCry compounds and changes the easy magnetization direction from basal-plane to easy-axis when x > 10 and y = 4.
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| Keywords:
75.30.Cr
75.30.Gw
75.50.Gg
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Published: 01 July 2001
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| PACS: |
75.30.Cr
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(Saturation moments and magnetic susceptibilities)
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75.30.Gw
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(Magnetic anisotropy)
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75.50.Gg
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(Ferrimagnetics)
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