Raman Spectroscopy Study of Oxygen Vacancies in PbTiO3 Thin Films Generated Heat-Treated in Hydrogen Atmosphere
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概要
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Raman spectroscopy is utilized to study the evaluation of vacancies in PbTiO3 thin films subjected to hydrogen atmosphere heat treatment. The $B_{1}$ mode consisted of only oxygen ion vibration was shifted to lower frequency with increasing heat treatment temperature. It was considered that the oxygen ions were lacking from PbTiO3, and that oxygen vacancies were generated. It was found that the frequency of the $B_{1}$ mode is proportional to oxygen ion content. Pb ions were also lacking in the PbTiO3 thin films with oxygen ions and the number of oxygen vacancies was larger than that of Pb ions. We suggest that the Raman spectroscopy is a suitable tool for the evaluation of oxygen vacancies in PbTiO3 thin films.
- 2008-09-25
著者
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Osada Minoru
Advanced Materials Laboratory National Institute For Materials Science
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Funakubo Hiroshi
Department Of Innovative And Engineered Materials
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Ikariyama Rikyu
Department Of Innovative And Engineered Materials Interdisciplinary Graduate School Of Science And E
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Nishida Ken
Department Of Electronic And Photonic Systems Engineering Kochi University Of Technology
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Katoda Takashi
Department Of Electronic And Photonic Systems Engineering Kochi University Of Technology
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Fujisawa Takashi
Department Of Accelerator And Medical Physics National Institute Of Radiological Sciences
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Yamamoto Takashi
Department Of Applied Chemistry Faculty Of Engineering Ehime University
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Osada Minoru
Advanced Materials Laboratory, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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Takeuchi Hironari
Department of Electronic and Photonic System Engineering, Kochi University of Technology, 185 Tosayamada-cho, Kami, Kochi 782-8502, Japan
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Yosiaki Ishimoto
Department of Electronic and Photonic System Engineering, Kochi University of Technology, 185 Tosayamada-cho, Kami, Kochi 782-8502, Japan
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Sakai Joe
Laboratoire LEMA, UMR 6157 CNRS/CEA, Université François Rabelais, Parc de Grandmont 37200 Tours, France
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Ito Nobuaki
Center for Nano Materials and Technology, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
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Kamo Takafumi
Department of Innovative and Engineered Materials, Tokyo Institute of Technology, 4259 Nagatuda, Midori-ku, Yokohama 226-8503, Japan
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Sakai Joe
Laboratoire d'Électrodynamique des Matériaux Avancés (LEMA), UMR 6157 CNRS/CEA, Université François Rabelais, Parc de Grandmont 37200 Tours, France
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Sakai Joe
Laboratoire LEMA, UMR 6157 CNRS/CEA, Université François Rabelais, Parc de Grandmont 37200 Tours, France
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Ikariyama Rikyu
Department of Innovative and Engineered Materials, Tokyo Institute of Technology, 4259 Nagatuda, Midori-ku, Yokohama 226-8503, Japan
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Nishida Ken
Department of Communicating Engineering, National Defense Academy, Yokosuka, Kanagawa 239-8686, Japan
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Funakubo Hiroshi
Department of Innovative and Engineered Material, Tokyo Institute of Technology, Yokohama 226-8503, Japan
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Katoda Takashi
Department of Electronic and Photonic System Engineering, Kochi University of Technology, 185 Tosayamada-cho, Kami, Kochi 782-8502, Japan
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