2010 Fiscal Year Final Research Report
Control of physical properties by means of photocarrier injection
| Project/Area Number |
20540356
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Condensed matter physics II
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| Research Institution | Okayama University |
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Principal Investigator |
MURAOKA Yuji Okayama University, 大学院・自然科学研究科, 准教授 (10323635)
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| Co-Investigator(Renkei-kenkyūsha) |
YOKOYA Takayoshi 岡山大学, 大学院・自然科学研究科, 教授 (90311646)
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| Research Collaborator |
SHIN Shik 東京大学, 物性研究所, 教授 (00162785)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 光キャリア注入 / 金属酸化物 / 薄膜 / 界面 |
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| Research Abstract |
We have aimed to control the physical properties of oxide films by using photocarrier injection (PCI) method. In VO_2/TiO_2(001) system, it is found that making a sharp interface is important to control the physical properties by PCI method, because the solid solution is formed at the interface between the film and the substrate. In SnO_2 system, a large change in resistance is observed under an ultraviolet light irradiation. We have developed the materials to which we would apply the PCI method. We have successfully obtained a high quality CrO_2 thin film by developing a preparation method and also found a room temperature ferromagnetic behavior in hollandite-type Ti oxide compounds.
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[Journal Article] Photoemission evidence for a Mott-Hubbard meta-insulator transition in VO_22008
Author(s)
R.Eguchi, M.Taguchi, M.Matsunami, K.Horiba, K.Yamamoto, Y.Ishida, A.Chainani, Y.Takata, M.Yabashi, D.Miwa, Y.Nishino, K.Tamasaku, T.Ishikawa, Y.Senba, H.Ohashi, Y.Muraoka, Z.Hiroi, S.Shin
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Journal Title
Phys.Rev.B 78
Pages: 075115-1-"075115-6"
Peer Reviewed
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[Presentation] Preparation of the CrO_2 thin films using a Cr_8O_<21> precursor2010
Author(s)
Y.Muraoka, K.Iwai, S.Yoshida, T.Wakita, M.Hirai, T.Yokoya, Y.Kato, T.Muro, Y.Tamenori
Organizer
2010 Fall Meeting of the Materials Research Society
Place of Presentation
Hynes Convention Center, Boston, U.S.A.
Year and Date
2010-12-03
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[Presentation] Bulk and surface physical properties of the CrO_2 thin films prepared from a Cr_8O_<21> precursor2010
Author(s)
Y.Muraoka, K.Iwai, S.Yoshida, T.Wakita, M.Hirai, T.Yokoya, Y.Kato, T.Muro, Y.Tamenori
Organizer
17^<th> International Workshop on Oxide Electronics
Place of Presentation
Awaji Yumebutai International Conference Center, Hyogo, Japan
Year and Date
2010-09-21
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[Presentation] Spin state of Mn ion in birnessite-type manganese dioxide2009
Author(s)
Y.Muraoka, M.Tajima, T.Wakita, M.Hirai, T.Yokoya,, Y.Kato, T.Muro, Y.Tamenori
Organizer
The 13thHiroshima International Symposium on Synchrotron Radiation
Place of Presentation
Hiroshima Unversity, Hiroshima, Japan
Year and Date
2009-03-10
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