重イオン照射した Fe-Cr 合金の磁気ヒステリシス特性の 照射温度及び Cr 濃度依存性
The irradiation temperature and Chromium concentration dependence of the magnetic properties of heavy-ion irradiated Iron-Chromium alloys
著者:
兜森 達彦 Tatsuhiko KABUTOMORI 鎌田 康寛 Yasuhiro KAMADA 小林 悟 Satoru KOBAYASHI 三谷 誠司 Seiji MITANI 渡辺 英雄 Hideo WATANABE
発刊日:
公開日:
iron-chromium alloyirradiation embrittlementmagnetic properties
概要
Magnetic properties of heavy ion irradiated single crystalline Fe Cr films were investigated High quality Fe 20%Cr 001 films with a thickness of 30 nm were prepared by electron beam deposition and irradiated by 2 4MeV Cu2+ ions at various temperatures and magnetization curves were measured using a VSM Micro fabricated films and Fe Cr film with Cr concentration gradient 0% 13% were also prepared and magnetic domain struct ures were observed using a Kerr microscope The coercivity of Fe 20%Cr increased by irradiation at 475°C, and the critical magnetic field of Fe Cr films increased above the Cr concentration of 9 % These phenomena reflect the phase separation due to the irradiation This study demonstrates the feasibility of magnetic techniques to detect the embrittlement of Fe Cr alloys under the high temperature and irradiation environment
