| Project/Area Number |
22340081
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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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 I
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| Research Institution | Nagoya Institute of Technology |
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Principal Investigator |
IWATA Makoto 名古屋工業大学, 工学研究科, 准教授 (40262886)
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| Co-Investigator(Kenkyū-buntansha) |
MAEDA Masaki 名古屋工業大学, 工学研究科, 教授 (10091745)
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| Research Collaborator |
ISHIBASHI Yoshihiro 名古屋大学, 名誉教授
IIJIMA Naoya 名古屋工業大学, 工学研究科, 大学院生
MAEKAWA Naoki 名古屋工業大学, 工学研究科, 大学院生
TANAKA Kazuki 名古屋工業大学, 工学研究科, 大学・生
ANDO Kenichiro 名古屋工業大学, 工学研究科, 大学院生
YOKOI Ryuta 名古屋工業大学, 工学研究科, 大学院生
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥14,820,000 (Direct Cost: ¥11,400,000、Indirect Cost: ¥3,420,000)
Fiscal Year 2012: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2011: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2010: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
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| Keywords | 誘電体 / 酸化物強誘電体 / 複合ペロブスカイト構造 / 構造相転移 / 強誘電体 / モルフォトロピック相境界 / 相転移 / 臨界点 / 単結晶 / 電場誘起 / 臨界現象 / 相図 |
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| Research Abstract |
The purpose of our study is that stable phases as an average structure in complex perovskite ferroelectrics Pb(Zn1i3 Nb2,3)O3- PbTiO3 (PZN-PT) are clarified. In the present study, the equipment to measure the dielectric dispersion between 100 Hz to 1MHz under the DC biasing voltage of about 800 V was composed. The electric field-temperature phase diagrams in the electric field along the [001], [011], [111] directions in PZN-PT were clarified. Along [001] direction, the critical end point at about 1 kV/cm, which is considerably small, was found. It was also found that aspect of phase diagrams strongly depends on the direction of the electric field.
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