CEMS study of stainless steel films deposited by pulsed laser ablation of AISI316 |
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| Authors: | K Nomura Y Yamada R Tomita T Yajima K Shimizu M Mashlan |
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| Institution: | (1) Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, 113-8656 Tokyo, Japan;(2) Department of Chemistry, Science University of Tokyo, 1-3 Kagurazaka, Shinjuku-ku, 162-8601 Tokyo, Japan;(3) Department of Applied Chemistry, Faculty of Engineering, Saitama Institute of Engineering, 1690 Fusaiji, Okabe, 369-0293 Saitama, Japan;(4) Chemistry Laboratory, Faculty of Economics, Keio University, 4-1-1 Hiyoshi, 223-8521 Yokohama, Japan;(5) Department of Experimental Physics, Palacky University, Svobody 26, 771 46 Olomouc, Czech republic |
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| Abstract: | Thin stainless steel films deposited on SiO2/Si wafer were prepared by a pulsed laser ablation of austenite stainless steel (AISI316), and characterized by conversion electron Mössbauer spectrometry (CEMS) using a He gas proportional counter. As-deposited films were composed of a magnetic phase. When deposited films were heated in air at various temperatures, the hyperfine field of the magnetic phase increased. Hematite was produced on the surface, and the magnetic orientation changed from parallel to in-plane at random with the increase of heating temperatures. The metallic iron and magnetite were produced at 400°C in dry Ar + 5%H2 atmosphere. When the film was heated in wet Ar + 5%H2 atmosphere at 600°C, maghemite was produced on the surface, and austenite phase was produced in the inner film. |
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| Keywords: | 76 80 +y |
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