The authors investigated the method of preparation and soft magnetic properties of electrodeposited Fe-Co-Ni-Cr alloy film with high saturation magnetization and a single-phase structure. It was found that Fe-Co-Ni-Cr alloy film with a single-phase fcc structure can be electrodeposited at the cathode in a solution composed of Fe2+, Co2+, Ni2+and Cr3+ions and with SO42-as the count anion, by plating at current densities of more than 30 mA/cm2. Film consisting of Fe44Co17Ni36Cr3alloy, prepared by the plating method described in this paper, has soft magnetic properties (μiHA≫ 1500, HcHA≪ 0.5 Oe, λs= 6x10-6, Bs= 16,800 G) qualifying it for use in HDD thin film magnetic head cores.
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Omata et al. (1990) studied this question.
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