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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2007.12
- 수록면
- 133 - 136 (4page)
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초록· 키워드
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We have carried out the study of magnetocaloric effect for as-quenched and annealed Fe<SUB>91-x</SUB>Y<SUB>x</SUB>Zr? alloys. Samples were prepared by arc melting the high-purity elemental constituents under argon gas atmosphere and by single roller melt spinning. These alloys were annealed one hour at 773 K in vacuum chamber. The magnetization behaviours of the samples were measured by vibrating sample magnetometer. The Curie temperature increases with increasing Y concentration (x = 0 to 8). Temperature dependence of the entropy variation ΔS<SUB>M</SUB> was found to appear in the vicinity of the Curie temperature. The results show that annealed Fe<SUB>86</SUB>Y?Zr? and Fe<SUB>83</SUB>Y?Zr? alloys a bigger magnetocaloric effect than that those in as-quenched alloys. The value is 1.23 J/㎏ K for annealed Fe<SUB>86</SUB>Y?Zr? alloy and 0.89 J/㎏ K for as-quenched alloy, respectively. In addition, the values of ΔS<SUB>M</SUB> for Fe<SUB>83</SUB>Y?Zr? alloy is 0.72 J/㎏ K for as-quenched and 1.09 J/㎏ K for annealed alloy, respectively.
목차
1. Introduction
2. Experimental
3. Results and Discussion
4. Conclusion
Acknowledgement
References
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