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Annealing effect on the magnetic properties of cobalt-based amorphous alloys

Authors
Kim, SuminKim, Yong JinKim, Young KeunChoi-Yim, Haein
Issue Date
Apr-2017
Publisher
한국물리학회
Keywords
Annealing; Co-based; Amorphous; Soft magnetic; Ferromagnetic
Citation
CURRENT APPLIED PHYSICS, v.17, no.4, pp 548 - 551
Pages
4
Journal Title
CURRENT APPLIED PHYSICS
Volume
17
Number
4
Start Page
548
End Page
551
URI
https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/8598
DOI
10.1016/j.cap.2017.01.025
ISSN
1567-1739
1878-1675
Abstract
The annealing effects on the magnetic properties of the Co72B19.2Si4.8Cr4 and Co64.8Fe72E19.2Si4.8Cr4 alloy systems are reported. Ribbon samples with 2 mm width and 20-30 pm thickness for both compositions were synthesized by melt spinning. The as-spun samples were subjected to annealing at various temperatures below their glass transition temperatures for 15 min in a vacuum. The annealed systems tended to have improved soft magnetic characteristics, including higher saturation magnetization and lower coercivity values, while maintaining their amorphous phase. A high saturation magnetization of 87.8 emu g(-1) and low coercivity of 0.084 Oe were obtained for Co64.8Fe7.2B19.2Si4.8Cr4 after annealing at 400 degrees C, which is a significant improvement in comparison to the magnetic properties of the as-spun ribbons. (C) 2017 Elsevier B.V. All rights reserved.
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첨단소재·전자융합공학부 (신소재물리전공)
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