| 摘要 |
PROBLEM TO BE SOLVED: To realize a ferrite magnet wherein, comprising high residual magnetic flux density and coercive force as not being attainable with a conventional M-type ferrite magnet, the high residual flux density and coercive force are obtained, even if relatively coarse ferrite particles which exceed 1 μm in particle size are used, with improved temperature characteristic for HcJ. SOLUTION: A main phase of a hexagonal system magnet-plumbite type ferrite wherein, with A being at least one kind of element selected from among Sr, Ba, Ca, and Pb, while surely comprising Sr, R being at least one kind of element selected among rare-earth element (comprising Y) and Bi, while surely comprising Pr and/or Nd, M being Co or Co and Zn, related to a constitution ratio of total sum of metal elements A, R, Fe, and M, A is 1-13 atom %, R is 0.05-10 atom %, Fe is 80-95 atom %, and M is 0.1-5 atom % is provided. |
