Electrodeposition and hard magnetic properties of Co–Pt films in comparison to Fe–Pt films

• Published in: Journal of magnetism and magnetic materials Vol. 314; no. 2; pp. 116 - 121
• Main Authors: Žužek Rožman, K., Krause, A., Leistner, K., Fähler, S., Schultz, L., Schlörb, H.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.07.2007; Elsevier Science
• Subjects: Annealing; Applied sciences; Condensed matter: electronic structure, electrical, magnetic, and optical properties; CoPt; Electrodeposition; Exact sciences and technology; FePt; formula omitted; Hard magnetic films; Heat treatment; Magnetic properties and materials; Magnetic properties of monolayers and thin films; Magnetic properties of surface, thin films and multilayers; Metals. Metallurgy; Phase formation; Physics; Production techniques; Studies of specific magnetic materials; 68.35.Dv; CoPt; FePt; L 1 0; Hard magnetic films; 75.70.-I; 75.50.Vv; 75.50.Ww; Electrodeposition; 81.15.Pq; Phase formation; Electrochemical potential; Platinum alloys; Iron alloys; Magnetic thin films; Deposition process; Thin films; Hysteresis loop; Ll0; Coercive force; Magnetic materials; Electrodeposited coatings; Exchange interactions; Quartz microbalance; Magnetic properties
• ISSN: 0304-8853
• DOI: 10.1016/j.jmmm.2007.02.146

Co–Pt thin films were prepared using single bath electrodeposition. The deposition process was analysed using current-potential and electrochemical quartz microbalance (EQCM) measurements. As-deposited films were annealed to achieve the L 1 0 phase. Under optimised conditions, a maximum coercivity of 1.17 T and a maximum remanence of 0.7 T are achieved. The δ J analysis of the hysteresis loops reveals exchange coupling in the annealed film. Deposition process, phase formation, and magnetic properties are discussed in comparison to electrodeposited Fe–Pt films.