Magnetic properties of rare-earth permanent magnets under a high radiation environment

Abstract

An study on the demagnetization of rare-earth permanent magnets under high radiation environment is started from the microscopic point of view. The demagnetization of NEOMAX is successfully induced by the well defined neutron field produced by the 5 MW reactor in Kyoto University. Preliminary TDPAC measurement of 111 Cd(← 111 In) in NEOMAX, including demagnetized one, is reported.