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열처리 온도와 시간에 따른 비대칭 자기 이력 곡선의 변화
신경호(K. H. Shin),민성혜(S. H. Min),이장로(J. R. Rhee) 한국자기학회 1995 韓國磁氣學會誌 Vol.5 No.4
It has been reported that Co-based amorphous ferromagnetic alloys annealed in a small magnetic field develop a reproducible, asymmetric hysteresis loop. If the direction of the field during annealing is regarded as +, the magnetization reversal from - to + is smooth and reversible, with its slope determined by the demagnetizing field of the sample. This phenomenon is called the asymmetric magnetization reversal (AMR). The shape of the hysteresis loop depends sensitively on the condition during the anneal and the alloy composition. Here, we report on the effect of the annealing temperature and time on AMR in a zero magnetostrictive ferromagnetic amorphous alloy. The AMR effect develops in a very short time at a reasonably high temperature, but is stabilized by annealing for a prolonged time.
비정질 자성 합금의 조성에 따른 비대칭 자기 이력 곡선의 변화
신경호(K. H. Shin),민성혜(S. H. Min),이장로(J. R. Rhee) 한국자기학회 1995 韓國磁氣學會誌 Vol.5 No.4
In order to investigate the origin of the asymmetric magnetization reversal effect, we studied the variation of magnetic hysteresis loops with the alloy composition in amorphous ferromagnetic alloy ribbons of (Fe_(1-x)Co_x)_(75)Si_(10)B_(15) system annealed at 380 ℃ for 16 hours in a zero field condition. The asymmetric magnetization reversal effect developed more strongly in amorphous ribbons having two metallic components than in ribbons having a single metallic component. The effect developed more strongly in ribbons showing a smaller value of the saturation magnetostriction. The development of the asymmetric magnetization reversal effect was affected by the ratio of two metallic components as well as the magnitude of the saturation magnetostriction.
Fe-Co-Si-B 4원계 비정질 자성합금의 열처리 온도와 시간, 조성이 비대칭 자화반전에 미치는 영향
민성혜,이장로,신경호 숙명여자대학교 자연과학연구소 1994 자연과학논문집 Vol.- No.5
It has been reported that Co-based amorphous ferromagnetic alloys annealed in a small magnetic field develop a reproductible, asymmetric hysteresis loop. If the direction of the field during annealing is regarded as +, the magnetization reversal from - to + is smooth and reversible, with its slope determined by the demagnetizing field of the smalpe. This phenomenon is called the asymmetric magnetization reversal(AMR). The shape of the hysteresis loop depends sensitively on the condition during anneal and the composition. Here, we report on the effect of the annealing temperature, time, and composition on AMR in Fe Co-Si-B based ferromagnetic amorphous alloys. The AMR effect develops in a very short time at a reasonably high temperature, but is stabilized by annealing for a prolonged time. AMR can be also produced in a wide range of amorphous alloy composition.