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김철기(C. G. Kim),김호철(H. C. Kim),윤석수(S. S. Yoon),박덕근(D. G. Park),홍준화(J. H. Hong),지세환(S. H. Jee) 한국자기학회 1998 韓國磁氣學會誌 Vol.8 No.2
The complex magnetic susceptibility of as-quenched and proton irradiated amorphous ribbons of Fe_(81)B_(13.5)Si_(3.5)C₂ was measured in the frequency range 10 ㎑ ~ 10 ㎒. The frequency spectra of real and imaginary parts of susceptibility showed a typical Debye-type relaxation. Relatively high relaxation frequency, ~3 ㎒ observed in the present work suggested that domain rotation is involved in the relaxation process. The susceptibility at the low frequency decreased with the irradiation, while that at high frequency increased due to the increasing defect density. The relaxation frequency of domain rotation shifted toward higher frequency. due to the increasing pinning force against domain motion by the irradiation.