Crystal structure and magnetic properties of SmFe9-xCox alloys
来源期刊：Rare Metals2014年第1期
论文作者：Yang Luo Dun-Bo Yu Hong-Wei Li Wei-Dong Zhuang Kuo-She Li Wen-Long Yan
文章页码：54 - 57
摘 要：The crystal structure and magnetic properties of SmFe9-x Cox（x = 0, 1, 3, 5） alloys were studied by X-ray powder diffraction（XRD） and magnetic measurements. The Th2 Zn17-type structure of the as-cast state is changed to TbCu7-type structure after quenching to a rotating molybdenum roll under certain velocity（12, 20, and 32 m s-1）. The（002） XRD peak appears and a-Fe phase disappears when the Co is added up to x = 5. Saturation magnetization of SmFe9 under different temperature shows 9 % change（112–102 A m2 g-1） when the temperature is higher than 200 K. The saturation magnetization is 115 A m2 g-1and coercivity is 0.304 T at 5 K for SmFe9 alloys. Increased saturation magnetization and decreased coercivity can be obtained for Co added up to x = 5 at 5 K.
Yang Luo1,2，Dun-Bo Yu1,2，Hong-Wei Li1,2，Wei-Dong Zhuang1,2，Kuo-She Li1,2，Wen-Long Yan1,2
1. National Engineering Research Center for Rare Earth Materials,General Research Institute for Nonferrous Metals2. Grirem Advanced Materials Co., Ltd
摘 要：The crystal structure and magnetic properties of SmFe9-x Cox（x = 0, 1, 3, 5） alloys were studied by X-ray powder diffraction（XRD） and magnetic measurements. The Th2 Zn17-type structure of the as-cast state is changed to TbCu7-type structure after quenching to a rotating molybdenum roll under certain velocity（12, 20, and 32 m s-1）. The（002） XRD peak appears and a-Fe phase disappears when the Co is added up to x = 5. Saturation magnetization of SmFe9 under different temperature shows 9 % change（112–102 A m2 g-1） when the temperature is higher than 200 K. The saturation magnetization is 115 A m2 g-1and coercivity is 0.304 T at 5 K for SmFe9 alloys. Increased saturation magnetization and decreased coercivity can be obtained for Co added up to x = 5 at 5 K.
关键词：
