Microstructure and magnetic behavior of electrodeposited CoPt thick films upon annealing

被引：16
|
作者：
Wu, P. L. [1 ]
Li, X. H. [1 ]
Li, W. [1 ]
Sun, H. Y. [1 ]
Chen, Y. [1 ]
Zhang, X. Y. [1 ]
机构：
[1] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China
来源：
MATERIALS LETTERS | 2008年 / 62卷 / 02期
基金：
中国国家自然科学基金;
关键词：
magnetic materials; microstructure; thick films;
D O I：
10.1016/j.matlet.2007.05.024
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
CoPt films with a thickness about 5-mu m consisting of a disordered face-centered cubic phase have been prepared by using the electrodeposition technique. X-ray diffraction measurements and transmission electron microscopy studies reveal that the annealed CoPt films possess a nanocomposite microstructure of A1 + L1(0) CoPt and the size and volume fraction of the L1(0) ordered phase increase with annealing time. A strong magnetic exchange coupling between the A1 phase and the L1(0) ordered phase is observed after annealing for 2.5 h, which yields a large coercivity H-c = 14.2 kOe and a high remanence ratio M-r/M-s = 0.88 for the nanocomposite thick films of A1 + L1(0) CoPt. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：309 / 312
页数：4
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