| 简介 |
PROBLEM TO BE SOLVED : To provide a permanent magnet which allows a numerical value of the surface magnetic flux density of a permanent magnet to be adjusted in a wide range, and which is small in initial demagnetization.SOLUTION : A rare earth-iron based bond permanent magnet is magnetized by : disposing a permanent magnet for magnetization in the vicinity of a rare earth-iron based bond magnet, which is an object to be magnetized; and lowering the temperature of the object to be magnetized from a temperature equal to or higher than the Curie point of the object to be magnetized, and below the Curie point of the permanent magnet for magnetization to a temperature below the Curie point of the object to be magnetized, while applying a magnetization magnetic field to the object to be magnetized by use of the permanent magnet for magnetization. In the rare earth-iron based bond magnet, the rare earth element is Pr. |
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