Ion-irradiation enhancement of materials degradation in Fe-Cr single crystals detected by magnetic technique

Yasuhiro Kamada, Hideo Watanabe, Seiji Mitani, Jitendra Narayana Mohapatra, Hiroaki Kikuchi, Satoru Kobayashi, Masaki Mizuguchi, Koki Takanashi

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9 Citations (Scopus)

Abstract

Single crystalline Fe-20%Cr film was prepared using a molecular beam epitaxy technique, and 2.4 MeV Cu2+ ion-irradiation was subsequently carried out at room temperature and at 748 K. Magnetic hysteresis measurement and magnetic domain observation showed that room-temperature irradiation did not have a large effect on the magnetic properties of Fe-20%Cr films. However, irradiation at 748 K caused a significant magnetic hardening and a drastic change in domain structures. It is assumed that the domain characteristics reflect the formation of chromium-rich precipitates due to the phase separation accelerated by irradiation. This study demonstrates the feasibility of nondestructive magnetic techniques for evaluating the materials degradation of Fe-Cr alloys under the irradiation environment.

Original languageEnglish
Pages (from-to)S861-S864
JournalJournal of Nuclear Materials
Volume442
Issue number1-3 SUPPL.1
DOIs
Publication statusPublished - 2013 Jan 14

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

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    Kamada, Y., Watanabe, H., Mitani, S., Mohapatra, J. N., Kikuchi, H., Kobayashi, S., Mizuguchi, M., & Takanashi, K. (2013). Ion-irradiation enhancement of materials degradation in Fe-Cr single crystals detected by magnetic technique. Journal of Nuclear Materials, 442(1-3 SUPPL.1), S861-S864. https://doi.org/10.1016/j.jnucmat.2012.11.042