Enhanced Temperature Stability of Coercivity in Sintered Permanent Magnet by Substitution of Ce for Didymium
| Autor: | Changjiang Yan, Ling Chen, Dong Lee, Renjie Chen, Shuai Guo, Jian Liu, Aru Yan |
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| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science Condensed matter physics Alloy Didymium 02 engineering and technology Coercivity engineering.material 021001 nanoscience & nanotechnology Magnetocrystalline anisotropy Microstructure 01 natural sciences Electronic Optical and Magnetic Materials Remanence Magnet 0103 physical sciences engineering Thermal stability Electrical and Electronic Engineering 0210 nano-technology |
| Zdroj: | IEEE Transactions on Magnetics. 52:1-4 |
| ISSN: | 1941-0069 0018-9464 |
| DOI: | 10.1109/tmag.2015.2505244 |
| Popis: | Effects of partial substitution of Ce for didymium (Pr–Nd alloy, abbreviated to Di) on elevated temperature magnetic properties in sintered (Di1– x Ce x )27.5Dy3Al0.1Cu0.1Febal.B (wt.%, $x=0~{\sim }~0.56$ ) magnets were investigated in this paper. Temperature stability of remanence was found to decrease in Ce substitution. However, the temperature stability of coercivity was largely improved when $x\geqslant 0.24$ . Temperature dependence of magnetocrystalline anisotropy field ( $H_{A})$ was improved as Ce substitution. Microstructural observation and micromagnetic analysis indicated that a microstructure of magnets was modified when $x\geqslant 0.24$ . The enhancement of temperature stability of coercivity was due to the improvement of temperature dependence of $H_{A}$ and the modification of microstructure. |
| Databáze: | OpenAIRE |
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