| Crystalline Behavior and Magnetic Properties of Nd60Fe30-x Al10Cox（x = 0,5,10） Bulk Amorphous Alloys |
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| 引用本文： | 徐晖,谭晓华,董远达. Crystalline Behavior and Magnetic Properties of Nd60Fe30-x Al10Cox（x = 0,5,10） Bulk Amorphous Alloys[J]. 中国稀土学报(英文版), 2003, 21(5): 552-554 |
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| 作者姓名： | 徐晖 谭晓华 董远达 |
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| 作者单位： | InstituteofMaterial,ShanghaiUniversity,Shanghai200072,China |
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| 基金项目： | ProjectsupportedbytheNationalNaturalScienceFoundationofChina ( 5 0 0 0 10 0 7，5 0 0 3 10 10 ) |
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| 摘 要： | Crystalline behavior and magnetic properties of Nd60Fe30-xAl10Cox( x = 0, 5, 10) bulk amorphous alloys were investigated by differential scanning calorimeter (DSC), X-ray diffraction (XRD) and the vibrating sample magnetometer (VSM). Neither glass transition nor supercooled liquid region before crystallization was observed for the as-cast Nd60Fe30-xAl10Cox ( x = 0,5,10) bulk amorphous alloys. The glass forming ability can be improved significantly by the addition of Co. The as-cast Nd60Fe30-xAl10Cox (x = 0,5,10) alloys show hard magnetic behavior. With the addition of Co content, intrinsic coercivity (iHc) increases while the saturation magnetization(σs) and remanence (σr) decrease. The Curie temperature for the as-cast Nd60Fe30-xAl10Cox alloys increases from 451 K for x =0 to 468 K for x = 10. Some pre-cipitation of crystalline phases does not affect the hard magnetic properties of Nd60Fe30-xAl10Cox(x = 0,5,10) alloys, while the hard magnetic behavior disappears quickly after the alloys being completely crystallized.
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| 关 键 词： | 稀土合金 无组织合金 晶体 硬磁性能 |
Crystalline Behavior and Magnetic Properties of Nd60Fe30-xAl10Cox(x=0,5,10) Bulk Amorphous Alloys |
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| Abstract: | Crystalline behavior and magnetic properties of Nd60Fe30-xAl10Cox (x=0,5,10) bulk amorphous alloys were investigated by differential scanning calorimeter (DSC), X-ray diffraction (XRD) and the vibrating sample magnetometer (VSM). Neither glass transition nor supercooled liquid region before crystallization was observed for the as-cast Nd60Fe30-xAl10Cox (x=0,5,10) bulk amorphous alloys. The glass forming ability can be improved significantly by the addition of Co. The as-cast Nd60Fe30-xAl10Cox (x=0,5,10) alloys show hard magnetic behavior. With the addition of Co content, intrinsic coercivity (iHc) increases while the saturation magnetization(σs) and remanence (σr) decrease. The Curie temperature for the as-cast Nd60Fe30-xAl10Cox alloys increases from 451 K for x=0 to 468 K for x=10. Some precipitation of crystalline phases does not affect the hard magnetic properties of Nd60Fe30-xAl10Cox (x=0,5,10) alloys, while the hard magnetic behavior disappears quickly after the alloys being completely crystallized. |
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| Keywords: | materials science bulk amorphous alloy crystalline behavior hard magnetic property rare earths |
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