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자료유형
학술저널
저자정보
저널정보
한국자기학회 Journal of Magnetics Journal of Magnetics Vol.1 No.1
발행연도
1996.6
수록면
24 - 30 (7page)

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The relationship between the effective permeability and the remanence ratio of an Fe-based amorphous alloy (Metglas 2605S3A) is investigated over a wide frequency range, in an effort to understand magnetization behavior of the alloy. In the frequency range from 1 to 200㎑, the permeability is maximum at the remanence ratio of 0.4-0.5 and, at frequencies over 500㎑, the correlation with negative coefficients emerges indicating that the permeability decreases with the remanent ratio, except for the ribbon coated with an insulating layer of MgO which exhibits both high values of the effective permeability and remanence ratio. It is considered from the correlation results that the boundary at which the dominant magnetization mechanism changes from domain wall motion to spin rotation is near 500㎑. The core loss is also investigated as a function of annealing time when the samples are annealed at a fixed temperature of 435℃. The core loss in most cases decreases with the annealing time, the degree of the loss reduction increasing with the measured frequency. The present loss results indicate that the total loss may consist of the hysteresis loss and anomalous eddy current loss. The two loss components are considered to be of similar magnitudes at low frequencies while, at high frequencies, the dominant contribution to the total loss is the anomalous loss.

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Abstract

1. Introduction

2. Experimental

3. Results and Discussion

4. Conclusion

References

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