Effects of gamma-Ray Radiation on Magnetic Properties of NdFeB and SmCo Permanent Magnets for Space Applications

Jose L Mesa,A Fernandez,C Hernando,M E Mchenry,Claudio Aroca, M T Alvarez,Marina Diazmichelena

Radiation Effects Data Workshop（2014）

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摘要

Several samples of NdFeB and SmCo permanent magnets have been irradiated with gamma rays up to different total irradiation doses until 1Mrad(Si). Magnetic properties of the samples have been measured at different temperatures before and after irradiation. The modifications of the magnetic parameters are presented. From these results it is highlighted which permanent magnets show more resistance to radiation and are more suitable to be included in devices for space applications or high radiation environments.

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关键词

gamma-rays,iron compounds,neodymium compounds,permanent magnets,space vehicles,ndfeb,smco,gamma-ray radiation,high radiation environments,magnetic properties,space applications,total irradiation doses,magnetization,temperature,gamma rays,magnetic moments,temperature measurement

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