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Vol.35, No.9, 1239 ~ 1244, 1997
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| Title |
| Magnetic Properties of ultrathin FeAlNbBCu Nanocrystalline Alloys Subjected to Magnetic Field Annealing |
| 박진영 , 서수정 , 김광윤 , 노태환 Jin Young Park , Su Jung Suh , Kwang Youn Kim , Tae Hwan Noh |
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| Abstract |
| Ultrathin Fe_(78)Al₄B_(12)Nb_5Cu_t nanocrystalline ribbon alloys with 8㎛ in thickness were annealed in longitudinal or transverse magnetic field, and then the high-frequency soft magnetic properties were investigated. High remanence ratio(B₁/B_10) of 0.83 was obtained when annealed in longitudinal magnetic field at 450℃. In case of transverse magnetic field annealing, very high effective permeability and excellent magnetic core loss characteristics in ㎒ range were obtained by transeverse magnetic field annealing. Moreover, for the ultrathin ribbon alloy with 5㎛ in thickness annealed in transverse field, much improved soft magnetic properties in the high frequency range were revealed. The effective permeability at 1㎒ and core loss at 1kG and 1㎒ were 9,000, 1.3W/cc, respectively. Thus, the reduction in ribbon thickness was very effective in improving the high-frequency magnetic properties upon transverse magnetic field annealing |
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