| 摘要 |
PROBLEM TO BE SOLVED: To obtain a high-resistance rare-earth magnet, which reduces an eddy current induced in the rare-earth magnet, without exerting a large effect on the magnetic characteristics of the magnet. SOLUTION: This sintered high-resistance rare-earth magnet consists of 14 to 18% of R (one kind of an element or more including Nd which is/are selected from among rare-earth elements including Y), 7 to 10% of B, 0.1 to 5% of M (one kind of an element or more, which is/are selected form among Co, Al, Cu, Nb, Ti, Mo and Ga), and 0.5 to 5% of O with the remnant of Fe. In this case, the high-resistance rare-earth magnet has a structure, wherein oxygen is thickened in the form of a rare-earth oxide, in a rich rare-earth phase and has a coercive force of 16kOe or stronger and a resistivity of 4×10<-4> Ωcm or higher. |
