Title :
Effects of gamma-Ray Radiation on Magnetic Properties of NdFeB and SmCo Permanent Magnets for Space Applications
Author :
Mesa, Jose L. ; Fernandez, Ana B. ; Hernando, C. ; McHenry, Michael E. ; Aroca, Claudio ; Alvarez, Maria T. ; Diaz-Michelena, Marina
Author_Institution :
Payloads & Space Sci. Dept., Nat. Inst. for Aerosp. Technol., Torrejon de Ardoz, Spain
Abstract :
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.
Keywords :
gamma-rays; iron compounds; neodymium compounds; permanent magnets; space vehicles; NdFeB; SmCo; gamma-ray radiation; high radiation environments; magnetic properties; permanent magnets; space applications; total irradiation doses; Magnetic moments; Magnetic properties; Magnetization; Permanent magnets; Radiation effects; Temperature; Temperature measurement;
Conference_Titel :
Radiation Effects Data Workshop (REDW), 2014 IEEE
Conference_Location :
Paris
Print_ISBN :
978-1-4799-5883-2
DOI :
10.1109/REDW.2014.7004566
