| 摘要 |
PURPOSE:To obtain a permanent magnet having good characteristics by using an R-T-B compound (where, T represents Fe and/or Co) for the magnet so that the magnet can have the main phase of a tetragonal compound or so that the magnet can have the main phase and an amorphous and/or crystalline auxil iary phase and magnetic susceptibility equal to or lower than a specific value in an external magnetic field having a specific intensity. CONSTITUTION:This material is a powdery material containing R (one or more kinds of rare-earth element including Y), Fe or Fe and Co, and B and has >=0.5 magnetic susceptibility X'(4piI/H) when the intensity H of the external magnetic field is 800Oe and 90-600mum particle size. The title permanent magnet can be formed to a bonded magnet by dispersing the material in a binder or to a bulky magnet by warm-molding the material. Therefore, the material hardly condenses and can be stably supplied to metallic molds. |
