研究者業績
Profile Information
- Affiliation
- Assistant Professor, Grad. School of Eng., University of Hyogo
- Degree
- 博士（工学）(Mar, 2009, 大阪大学)
- J-GLOBAL ID
- 201001021795659559
- researchmap Member ID
- 6000025936
- External link
Research Interests
9Research Areas
2Research History
6-
Apr, 2019 - Present
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Apr, 2009 - Mar, 2018
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2004 - 2006
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2002 - 2004
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2001 - 2002
Education
2-
- 2009
Papers
74-
Japanese Journal of Applied Physics, Dec 13, 2024
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Japanese Journal of Applied Physics, Oct 1, 2024
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Japanese Journal of Applied Physics, Sep 2, 2024
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Scientific Reports, 14 14358-1--9, Jun 21, 2024 Lead authorCorresponding authorA intermediate multidomain state and large crystallographic tilting of 1.78° for the (hh0)pc planes of a (001)pc-oriented single-domain Mn-doped BiFeO3 (BFMO) thin film were found when an electric field was applied along the [110]pc direction. The anomalous crystallographic tilting was caused by ferroelastic domain switching of the 109° domain switching. In addition, ferroelastic domain switching occurred via an intermediate multidomain state. To investigate these switching dynamics under an electric field, we used in situ fluorescent X-ray induced Kossel line pattern measurements with synchrotron radiation. In addition, in situ inverse X-ray fluorescence holography (XFH) experiments revealed that atomic displacement occurred under an applied electric field. We attributed the atomic displacement to crystallographic tilting induced by a converse piezoelectric effect. Our findings provide important insights for the design of piezoelectric and ferroelectric materials and devices.
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Crystals, 14 462-1-20, May 15, 2024 Peer-reviewed
Misc.
27-
116(118) 15-19, Jun 29, 2016
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PROCEEDINGS OF THE 2012 FIFTH INTERNATIONAL CONFERENCE ON EMERGING TRENDS IN ENGINEERING AND TECHNOLOGY (ICETET 2012), 128-131, 2012BiFeO3 (BFO) thin films have been prepared on SrTiO3 (001) single crystal substrates by sputtering process which is suitable for mass production. Domain structure can be controlled by off-cut angle and direction of SrTiO3 substrates. A lateral PFM and a XRD reciprocal space mapping results reveal the BFO thin film on SrTiO3 (001) with 4 degrees off-cut along [110] is single domain. The single domain BFO shows well-saturated ferroelectric D-E hysteresis loops at R.T.
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PROCEEDINGS OF THE 2012 FIFTH INTERNATIONAL CONFERENCE ON EMERGING TRENDS IN ENGINEERING AND TECHNOLOGY (ICETET 2012), 57-60, 2012We report on fabrication of Pb(Zr,Ti)O-3 (PZT)/ZnO core-shell nanowires (NWs) on Pt/Ti/SiO2 membrane structure by metalorganic chemical vapor deposition (MOCVD). On the membrane structure, the diameter of ZnO NWs was smaller than those on Pt/Ti/SiO2/Si substrate. The growth temperature dependence of the diameter of ZnO NWs suggests that the difference in the diameter of ZnO NWs on the membrane and Pt/Ti/SiO2/Si substrate was caused by a lowering of the growth temperature on the membrane owing to insufficient heating. PZT was uniformly grown onto ZnO NWs on the membrane, and no distinct difference was observed in crystalline properties of PZT. These experimental results indicate that the crystalline properties of PZT/ZnO core-shell NWs on the membrane is as good as those on the surrounding area, and also open the door to novel NW-based piezoelectric vibration energy harvesters in combination with a mechanical resonance of "soft" substract.
Presentations
135-
International Conference on Complex Orders in Condensed Matter 2023 (ICCOCM2023), Sep 28, 2023
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International Conference on Complex Orders in Condensed Matter 2023 (ICCOCM2023, Sep 25, 2023
Research Projects
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科学研究費助成事業 基盤研究(B), 日本学術振興会, Apr, 2023 - Mar, 2026
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科学研究費助成事業 学術変革領域研究(A), 日本学術振興会, Sep, 2021 - Mar, 2023
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科学研究費助成事業, 日本学術振興会, Jul, 2021 - Mar, 2023
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Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Japan Society for the Promotion of Science, Apr, 2019 - Mar, 2022
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Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Japan Society for the Promotion of Science, Apr, 2016 - Mar, 2019