ANISOTROPIC RARE EARTH PERMANENT MAGNET MATERIAL, MAGNETIC POWDER AND MAGNET INCLUDING SAME, AND THEIR MANUFACTURING METHODS

摘要

PROBLEM TO BE SOLVED: To provide an anisotropic rare earth permanent magnet material.;SOLUTION: The anisotropic rare earth permanent magnet material having Th₂Zn₁₇ type crystal structure is expressed by a general expression as (Sm_1-αR_α)×Fe_100-x-y-zM_yI_z, where R is as single Pr or combination of Pr and other rare and earth elements, α as 0.01≤α≤0.30, M as selected from Si, Ti, V, Cr, Mn, Co, Ni, Cu, Zn, Nb, Mo, Al, and Zr, I as single N or combination of N and C, and x, y, z is expressed as 7≤x≤12, 0.01≤y≤8.0, and 6≤z≤14.4 in its respective atomic percentage.;COPYRIGHT: (C)2008,JPO&INPIT