ELECTROLYTIC PREPARATION OF SM-CO THIN-FILMS AND THEIR MAGNETIC-PROPERTIES

By electrolyzing a formamide solution containing anhydrous samarium ch loride and cobalt chloride, amorphous alloy films were obtained. By XR D analysis, it was found that the films obtained from 10 and 20 mol pe rcent samarium baths and heated to 600-degrees-C in an argon atmospher e contained various types of cobalt oxide. Though they contained oxide s, these cobalt-rich films showed high-saturation magnetization. This paper discusses the possibility of an electroplating method for the pr eparation of rare-earth metal-iron group amorphous alloy films, which have been widely noted as high-powered magnetic or photo-magnetic reco rding materials.