Rare earth iron carbon-based magnetic powder and its production method

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Problem : To provide samarium iron carbon (Sm2Fe17Cx) magnetic powder with excellent thermal stability and high magnetic properties. Solution : Compositions represented by samarium (Sm), iron (Fe), cobalt (Co), gallium (Ga) and carbon (C), and the general formula : Sm2Fe (17-m-n) ComGanCx (however, 2. 0≦m≦3． 5、1． 5≦n≦3． 0、1． 00≦x≦1． A rare earth iron carbon-based magnetic powder containing a rhombushed crystal-based Th2Zn17 type compound having 75) as the main phase. [Selection Figure]Figure 1