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http://dx.doi.org/10.5012/bkcs.2007.28.12.2214

Effects of Bath Temperature on Electrodeposited Permanent Magnetic Co-Pt-W(P) Films  

Ge, Hongliang (College of Materials Science & Engineering, China Jiliang University)
Wu, Qiong (College of Materials Science & Engineering, China Jiliang University)
Wei, Guoying (College of Materials Science & Engineering, China Jiliang University)
Wang, Xinyan (College of Materials Science & Engineering, China Jiliang University)
Zhou, Qiaoying (College of Materials Science & Engineering, China Jiliang University)
Publication Information
Bulletin of the Korean Chemical Society / v.28, no.12, 2007 , pp. 2214-2218 More about this Journal
Abstract
The effects of bath temperature on electrochemical behavior, alloy composition, crystallographic structure, morphology and the magnetic properties of electrodeposited Co-Pt-W(P) films were investigated. Electrochemical studies show that alloy electrodeposition has been shifted to more positive potentials and the critical time for nucleation decreased as electrolyte temperature increased. As the temperature increased from 40 oC to 80 oC, tungsten content in the deposit increased, while phosphorus content decreased. The films deposited at T = 40 oC exhibited soft magnetic properties. However, electrodeposited at T = 70 oC, the films exhibited hard magnetic properties. It is also demonstrated that higher temperature more than 70 oC could weaken hard magnetic properties. XRD results indicated that the deposits obtained at 50 oC-70 oC showed enhancement of [00.1] P.O. (preferred orientation) with the bath temperature, which resulted in the stronger perpendicular magnetic anisotropy.
Keywords
Co-Pt-W(P) thin films; Electrochemical deposition; Bath temperature;
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