| Numéro |
J. Phys. Colloques
Volume 46, Numéro C10, Décembre 1985
Eighth International Conference on Internal Friction and Ultrasonic Attenuation in Solids
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|---|---|---|
| Page(s) | C10-725 - C10-728 | |
| DOI | https://doi.org/10.1051/jphyscol:198510159 | |
Eighth International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 46 (1985) C10-725-C10-728
DOI: 10.1051/jphyscol:198510159
Department of Physics, Wuhan University, Wuhan, China
J. Phys. Colloques 46 (1985) C10-725-C10-728
DOI: 10.1051/jphyscol:198510159
A STUDY OF THE MAGNETIC AFTER-EFFECT IN A DILUTE Fe-N SYSTEM
DI-HUA DING, JIN WU and Y.S. CHOWDepartment of Physics, Wuhan University, Wuhan, China
Abstract
MAE of a dilute Fe-N system in the range of 200-480K was investigated by measuring the disaccommodation of its initial susceptibility at various temperature T with or without preceding demagnetization of specimen. The results suggest that magnetic relaxation spectrum in the range of 350-480K is induced by the metastable Fe8N phase transformation. It is composed of a structural relaxation induced by pinning and depinning of the domain walls through precipitation and resolution of Fe8N and a thermal-activated relaxation due to N atoms close to the precipitates. A single cold work magnetic peak was observed at ~430K from a cold worked specimen.