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

fYear

2014

fDate

14-18 July 2014

Firstpage

1

Lastpage

4

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Radiation Effects Data Workshop (REDW), 2014 IEEE

Conference_Location

Paris

Print_ISBN

978-1-4799-5883-2

Type

conf

DOI

10.1109/REDW.2014.7004566

Filename

7004566