Magnetic and dielectric response in spin-lattice coupled system
| Project/Area Number |
26400369
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Condensed matter physics II
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| Research Institution | Tokyo University of Science |
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Principal Investigator |
Mitsuda Setsuo 東京理科大学, 理学部第一部物理学科, 教授 (90183962)
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| Co-Investigator(Renkei-kenkyūsha) |
KITAZAWA HIDEAKI 物質・材料研究機構, 先端材料解析研究拠点, 副拠点長 (00195257)
NAKAJIMA TARO 理化学研究所, 創発物性科学研究センター, 研究員 (30579785)
TERADA NORIKI 物質・材料研究機構, 量子ビームユニット, 主任研究員 (60442993)
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| Research Collaborator |
Karel Prokes Helmholtz-Zentrum Berlin für Materialien und Energie, Department Materials for Green Spintronics
Klaus Kiefer Helmholtz-Zentrum Berlin für Materialien und Energie, Department Sample Environment
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | スピン格子複合系 / スピンフラストレーション / マルチフェロイック / 交差相関物性 / 一軸応力 / 二等辺三角格子反強磁性 / スピン格子複合形 / スピン・格子系 |
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| Outline of Final Research Achievements |
(i) We have found that the application of uniaxial pressure p up to 600 MPa induces a new ferroelectric phase in a multiferroic CuFe1-xGaxO2, which is different from the well-studied spin-driven ferroelectric phase with helical magnetic ordering. The magnetic structure in the p-induced ferroelectric phase seems to be of a collinear sinusoidal type. Although this magnetic structure itself does not break the inversion symmetry, it is considered to play an important role in the origin of ferroelectricity in the p-induced ferroelectric phase through the spin-lattice coupling in this system. (ii) For an Ising magnet CoNb2O6, we succeeded in crossing the Wannier point (γ = 1) and access the region of γ < 1 by applying uniaxial pressure up to 1GPa along the c axis, where magnetic ground state AF-II magnetic ordering with q=1/ 2 is switched to AF-I magnetic ordering with q=0 at this critical uniaxial pressure~700MPa.
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Report
(4 results)
Research Products
(13 results)
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[Journal Article] Uniaxial pressure effects on spin-lattice coupled phase transitions in a geometrical frustrated magnet CuFeO22016
Author(s)
H. Tamatsukuri, S. Aoki, S. Mitsuda, T. Nakajima, T. Nakamura, T. Itabashi, S. Hosaka, S. Ito, Y. Yamasaki, H. Nakao, K. Prokes, and K. Kiefer
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Journal Title
Physical Review B
Volume: 94
Issue: 17
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Activation of frozen ferroelectric domain wall by magnetic field sweeping in multiferroic CuFeO22016
Author(s)
H. Tamatsukuri, S. Mitsuda, T. Nakajima, K. Shibata, C. Kaneko, K. Takehana, Y. Imanaka, N. Terada, H. Kitazawa, K. Prokes, S. Matas, K. Kiefer, S. Paeckel, A. Sokolowski, B. Klemke, and S. Gerischer
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Journal Title
PHYSICAL REVIEW B
Volume: 93
Issue: 17
Pages: 174101-174101
DOI
Related Report
Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
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