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No.4(pp.111-156)

Home > Issues > Volume 3 (1998) > No.4(pp.111-156)

Annealing Effect of Local Anisotropy Field in Amorphous Co₆₆Fe₄Ni₁B₁₄Si₁₅ Ribbon

Journal of Magnetics, Volume 3, Number 4, 31 Dec 1998, Pages 123-126

C. G. Kim(Department of Physics, Sun Moon University), M. H. Jeong(Department of Physics, Sun Moon University), M. H. Jeong(Department of Physics, Sun Moon University), S. S. Yoon(Department of Physics, Andong University), S. C. Yu(Department of Physics, Chungbuk Nat'l University)

Abstract

The magneto-impedance (MI) has been measured in the annealed Co₆₆Fe₄Ni₁B₁₄Si₁₅ amorphous ribbon for the evaluation of anisotropy field. MI at the frequency of 10 MHz is related to the transverse permeability from rotational magnetization depending on the local anisotropy field. MI varies sensitively with the annealing temperature, reflecting the change of anisotropy field distribution. The local anisotropy fields evaluated from MI Profiles are discussed in terms of the magnetic softness and microstructural change by the annealing.

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