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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2020.3
- 수록면
- 43 - 47 (5page)
- DOI
- 10.4283/JMAG.2020.25.1.043
이용수
초록· 키워드
오류제보하기
Mischmetal-based permanent magnets of (MM,Nd)<SUB>12</SUB>Fe<SUB>82</SUB>B<SUB>6</SUB> were prepared by melt-spinning method via varying the relative content of mischmetal and Nd. The coercivity is low, and the squareness of hysteresis loop is poor in MM<SUB>12</SUB>Fe<SUB>82</SUB>B<SUB>6</SUB> ribbons. The x-ray diffraction pattern, maximum of δm value as well as the temperature dependence of magnetization indicates that the partial substitution of Nd for MM could improve the crystallinity in the mischmetal-based magnets, and both the coercivity and squareness of hysteresis loop increase with Nd substitution for mischmetal. The increase of squareness should be partially attributed to the improvement in the crystallinity of R₂Fe<SUB>14</SUB>B crystal phase. For more than 4 at.% Nd substitution the coercivity is not less than that in corresponding (Ce,Nd)-based magnets, and the coercivity of 7.81 kOe and the maximum energy product of 15.41 MGOe were obtained in MM<SUB>8</SUB>Nd₄Fe<SUB>82</SUB>B<SUB>6</SUB> ribbons. These investigations show that it is reasonable to use the low cost mischmetal to prepare the resource-saving rare-earth magnets, and that optimizing the addition amount of Nd is necessary to improve the crystallinity and enhance the magnetic properties.
목차
1. Introduction
2. Experimental
3. Results and Discussion
4. Conclusions
References
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