| abstract |
A permanent-magnet material having a composition represented by the following formula; R(Co1-X-Y- alpha - beta FeXCuYM alpha M'62)A (wherein X, Y, alpha , beta , and A respectively represent the following numbers: 0.01</=X, 0.02</=Y</=0.25, 0.001</= alpha </=0.15, 0.0001</= beta </=0.001, and 6.0</=A</=8.3, providing that the amount of Fe to be added should be less than 15% by weight, based on the total amount of the composition, and R, M, and M' respectively represent the following constituents: R: At least one element selected from the group of rare earth elements, M: At least one element selected from the group consisting of Ti, Zr, Hf, Nb, V, and Ta, and M': B or B+Si), is disclosed. The permanent-magnetic material of the present invention is consisting of an intermetallic compound, permitting coexistence of liquid and solid phases in a wide region, and enabling sintering conditions warranting impartation of highly desirable magnetic characteristics to be selected in wide ranges. |