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

doi:10.1016/j.jnucmat.2012.11.042

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

Division of Nuclear Fusion Dynamics

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	S861-S864
Journal	Journal of Nuclear Materials
Volume	442
Issue number	1-3 SUPPL.1
DOIs	https://doi.org/10.1016/j.jnucmat.2012.11.042
Publication status	Published - 2013

All Science Journal Classification (ASJC) codes

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

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10.1016/j.jnucmat.2012.11.042

Cite this

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

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.",

author = "Yasuhiro Kamada and Hideo Watanabe and Seiji Mitani and Mohapatra, {Jitendra Narayana} and Hiroaki Kikuchi and Satoru Kobayashi and Masaki Mizuguchi and Koki Takanashi",

year = "2013",

doi = "10.1016/j.jnucmat.2012.11.042",

language = "English",

volume = "442",

pages = "S861--S864",

journal = "Journal of Nuclear Materials",

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TY - JOUR

T1 - Ion-irradiation enhancement of materials degradation in Fe-Cr single crystals detected by magnetic technique

AU - Kamada, Yasuhiro

AU - Watanabe, Hideo

AU - Mitani, Seiji

AU - Mohapatra, Jitendra Narayana

AU - Kikuchi, Hiroaki

AU - Kobayashi, Satoru

AU - Mizuguchi, Masaki

AU - Takanashi, Koki

PY - 2013

Y1 - 2013

N2 - 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.

AB - 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.

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VL - 442

SP - S861-S864

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1-3 SUPPL.1

ER -

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

Abstract

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