Investigation of coercivity for electroplated Fe-Ni thick films

Autor: T. Yanai, K. Eguchi, K. Koda, J. Kaji, H. Aramaki, K. Takashima, M. Nakano, H. Fukunaga
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: AIP Advances, Vol 8, Iss 5, Pp 056123-056123-5 (2018)
Druh dokumentu: article
ISSN: 2158-3226
DOI: 10.1063/1.5007293
Popis: We have already reported Fe-Ni firms with good soft magnetic properties prepared by using an electroplating method. In our previous studies, we prepared the Fe-Ni films from citric-acid-based baths (CA-baths) and ammonium-chloride-based ones (AC-baths), and confirmed that the coercivity for the AC-baths was lower than that for the CA-baths. In the present study, we investigated reasons for the lower coercivity for the AC-baths to further improve the soft magnetic properties. From an observation of magnetic domains of the Fe22Ni78 films, we found that Fe22Ni78 film for AC-bath had a magnetic anisotropy in the width direction, and also found that the coercivity in the width direction was lower than the longitudinal one for the AC-bath. As an annealing for a stress relaxation in the films reduced the difference in the coercivity, we considered that the anisotropy is attributed to the magneto-elastic effect.
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