Radiation-induced demagnetization of permanent magnets is important for a number of applications including space missions, particle accelerators and robots designed to carry out rescue missions at nuclear accidents where magnet failure can lead to serious consequences. This topic has been studied by several investigators over the past three decades and in this work, a review of the available literature is conducted and some general conclusions and trends are presented. In short, it can be gleaned that magnetism loss is dependent on the type of radiation, the energy of the incoming particle and the overall dose or fluence. Furthermore, magnetism loss also shows a dependence on the type of the irradiated magnet, the coercivity of the magnet, the demagnetizing field and the temperature of irradiation.

辐射引起的永磁体去磁对许多应用都很重要，包括太空飞行任务，粒子加速器和旨在在发生核事故而导致磁体严重后果的核事故中执行救援任务的机器人。在过去的三十年中，一些研究者对这个话题进行了研究，在这项工作中，对现有文献进行了回顾，并提出了一些一般性的结论和趋势。简而言之，可以看出，磁损耗取决于辐射的类型，入射粒子的能量以及总剂量或注量。此外，磁损耗还显示出与所照射的磁体的类型，磁体的矫顽力，退磁场和照射温度有关。