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Electrodeposited Fe–Ni Films Prepared in a Citric-Acid-Based Bath with Different pH Values

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Title: Electrodeposited Fe–Ni Films Prepared in a Citric-Acid-Based Bath with Different pH Values
Authors: Yanai, Takeshi / Shimokawa, Takaya / Watanabe, Y. / Nakano, Masaki / Suzuki, Kiyonori / Fukunaga, Hirotoshi
Issue Date: Jan-2014
Publisher: Institute of Electrical and Electronics Engineers Inc.
Citation: IEEE Transactions on Magnetics, 50(1), 2276022; 2014
Abstract: We plated Fe-Ni films froma citric-acid-based plating bath and evaluated the effect of pH value in the bath on the magnetic properties and the productivities of the films. In this study, the pH value of the bath was controlled from 0.5 to 3.6 by the addition of hydrochloric acid or sodium citrate. The electrodeposited Fe-Ni film with the Fe content of approximately 22 at.% prepared at high pH (>3) tends to show large coercivity (> 100 A/m), rough surface and relatively high cathode efficiency (> 70%) whereas the films prepared at low pH (< 1) tend to show low coercivities (< 50 A/m), smooth surfaces and low cathode efficiencies (< 60%). The Fe 22Ni78 film prepared from the bath without the pH adjuster of a hydrochloric acid or a sodium citrate shows low coercivity of 25 A/m, smooth surface and relatively high cathode efficiency of 65%. Since low coercivity, smooth surface and high cathode efficiency are important factors for mass-producing Fe-Ni films, we concluded that a citric-acid-based bath with pH range from 1 to 3 is suitable for electrodeposition of soft magnetic Fe-Ni films.
Keywords: Electrodepositon / Film / Permalloy / Soft magnetic material
URI: http://hdl.handle.net/10069/34643
ISSN: 00189464
DOI: 10.1109/TMAG.2013.2276022
Rights: © 2013 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Type: Journal Article
Text Version: author
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/34643

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