title: Gamma-ray irradiation on microsized Nd-Fe-B and Sr-ferrite magnets at low temperature.
abstract: The gamma-ray irradiation on microsized Nd-Fe-B and Sr-Fe permanent magnet at low temperature and room temperature was investigated. The change of shape and magnetic properties of two kinds of magnet powder before and after irradiation at low temperature was measured. The crystal structure of each permanent magnet powders was analyzed using X-ray powder diffraction (XRD) and the size and shape were characterized by scanning electron microscope (SEM). The changed magnetic properties of magnet such as saturation magnetization (M(s)) and coercivity (H(c)) were measured by VSM.
authors.affiliation: Department of Chemistry, Pukyong National University, Busan 599-1, Republic of Korea.
authors.forename: Young Chul
authors.initials: YC
authors.lastname: Han
authors.forename: Hyun Gil
authors.initials: HG
authors.lastname: Cha
authors.forename: Chang Woo
authors.initials: CW
authors.lastname: Kim
authors.forename: Young Hwan
authors.initials: YH
authors.lastname: Kim
authors.forename: Eun Sun
authors.initials: ES
authors.lastname: Ji
authors.forename: Young Soo
authors.initials: YS
authors.lastname: Kang