Patent ID: 8069552

Claim:
A method of manufacturing a rotor magnet with at least two pole-pairs for a cylindrical radial gap micro rotary electric machine, the method comprising steps of: 1) a process to form a laminated film magnet comprising isotropic nano-crystalline texture which contains an Î±Fe phase and an R 2 TM 14 B phase, where R is one of 10 to 20 atomic % Nd and 10 to 20 atomic % Pr, B is 5 to 20 atomic % and TM is one of Fe and partly Co-substituted Fe with 0 to 16 atomic %, and which has a remanence, Mr, of 0.95 T or more, the laminated film magnet being composed of a predetermined number of a plurality of thick films; 2) a process in which the laminated film magnet is cylindrically formed; and 3) a process in which the laminated film magnet is multi-polar magnetized in a radial direction of the thick films.