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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 1998.3
- 수록면
- 4 - 8 (5page)
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초록· 키워드
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Two different compositions of melt spun magnetic alloys, Nd₄Fe_(80)B_(16) and Nd₄Fe_(76)Co₃Hf_(0.5)Ga_(0.5)B_(16), were characterized in terms of magnetic properties and thermal behaviors. It was found that the addition of Hf and Ga effectively slow down the crystallization rate of the nanocomposite Nd₂Fe₁₄B/Fe₃B magnet. Coercivity(iHc) changes only slightly with varying the post annealing conditions confirming that iHc is not a sensitive magnetic quantity as a function of grain size and exchange coupled interaction. The experimentally observed behaviors of Mr and Hc do not vary monotonously with increasing grain size which is not in agreement with the numerically calculated result near the critical grain size(dc). The plot of the grain size dependence for the remanence and coercivity in isotrop!c nanocomposite magnets has been revised in this study. The maxium energy product, (B. H)max=15.34 MGOe, and a reduced remanence, Mr/Ms=0.84 were obtained, respectively.
목차
Abstract
1. Introduction
2. Experiment
3. Results and Discussion
4. Conclusion
References
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