NdFeB magnet Curie temperature is low, in order to 310-410 degrees, the temperature is less stable, remanent stability factor of -0.095-0.15% / K, is usually the maximum operating temperature of 150 degrees, there are already commercial-resistant 200 NdFeB permanent magnet-degree high temperature. Demagnetization curves at room temperature as a straight line, but the high temperature demagnetization curves of the lower bend, especially if it involves inappropriate prone to irreversible demagnetization