Electrodeposited CoPt films from a deep eutectic solvent

被引：38
作者：
Guillamat, P.
Cortes, M.
Valles, E.
Gomez, E. [1 ]
机构：
[1] Univ Barcelona, Dept Quim Fis, E-08028 Barcelona, Spain
来源：
SURFACE & COATINGS TECHNOLOGY | 2012年 / 206卷 / 21期
关键词：
DES solvent; CoPt electrochemical preparation; SEM; Magnetic CoPt; CHOLINE CHLORIDE; MAGNETIC-PROPERTIES; MORPHOLOGY; ALLOYS;
D O I：
10.1016/j.surfcoat.2012.04.093
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
CoPt magnetic alloy has been successfully electrodeposited for the first time in a choline chloride/urea based deep eutectic solvent (DES) on glass/ITO substrate. A vitreous carbon substrate has been used to test and analyse the deposition processes of both platinum and platinum-cobalt systems in the DES. The potential range at which CoPt alloy with variable Pt:Co ratio can be prepared was established. Both grey and bright alloy deposits, showing nodular morphology and uniformly distributed on the substrate were obtained. The composition was homogeneous in the deposit and absence of contamination due to DES solvent was demonstrated. The crystalline structure of the CoPt deposits prepared in the 50 to 85 wt.% Pt range evolved from Co hcp to Pt fcc distorted phases. Coercivities around 1900 Oe were measured for deposits with around 54 wt.% Pt. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：4439 / 4448
页数：10
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