Effect of high temperature annealing on ferromagnetism induced by energetic ion irradiation in FeRh alloy
✍ Scribed by S. Kosugi; Nao Fujita; T. Matsui; F. Hori; Y. Saitoh; N. Ishikawa; Y. Okamoto; A. Iwase
- Publisher
- Elsevier Science
- Year
- 2011
- Tongue
- English
- Weight
- 498 KB
- Volume
- 269
- Category
- Article
- ISSN
- 0168-583X
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✦ Synopsis
Effects of thermal annealing on ion-irradiation induced ferromagnetism of Fe-50at.%Rh bulk alloy and the related structural change were investigated by means of superconducting quantum interference device (SQUID) and extended X-ray absorption fine structure (EXAFS), respectively. Depending on the annealing temperature from 100 to 500 °C, the magnetization induced by 10 MeV iodine ion irradiation and the lattice structure of the alloy were remarkably changed. After 500 °C annealing, the magnetization and the lattice ordering of the alloy become similar to the states before the irradiation. The experimental result indicates that the thermal relaxation of irradiation-induced atomic disordering dominates the magnetic state of ion-irradiated Fe-50at.% Rh alloy.