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Journal Articles

Ferroelectricity induced by a combination of crystallographic chirality and axial vector

Nagai, Takayuki*; Hagihara, Masato; Yokoi, Rie*; Moriwake, Hiroki*; Kimura, Tsuyoshi*

Journal of the American Chemical Society, 146(33), p.23348 - 23355, 2024/08

https://doi.org/10.1021/jacs.4c06283
 Times Cited Count：2 Percentile：17.32(Chemistry, Multidisciplinary)

Journal Articles

Microscopic dynamics of lithium diffusion in single crystal of the solid-state electrolyte La$$_{2/3-x}$$Li$$_{3x}$$TiO$$_{3}$$ (x = 0.13) studied by quasielastic neutron scattering

Matsuura, Masato*; Fujiwara, Yasuyuki*; Moriwake, Hiroki*; Ohara, Koji*; Kawakita, Yukinobu

Physical Review B, 104(9), p.094305_1 - 094305_7, 2021/09

https://doi.org/10.1103/PhysRevB.104.094305
 Times Cited Count：15 Percentile：52.26(Materials Science, Multidisciplinary)

Journal Articles

Raman scattering study of the ferroelectric phase transition in BaTi$$_2$$O$$_5$$

Tsukada, Shinya*; Fujii, Yasuhiro*; Yoneda, Yasuhiro; Moriwake, Hiroki*; Konishi, Ayako*; Akishige, Yukikuni*

Physical Review B, 97(2), p.024116_1 - 024116_7, 2018/02

https://doi.org/10.1103/PhysRevB.97.024116
 Times Cited Count：24 Percentile：65.58(Materials Science, Multidisciplinary)

Uniaxial ferroelectric BaTi$$_2$$O$$_5$$ with a Curie temperature $$T_{rm C}$$ of 743 K was investigated to clarify its paraelectric-ferroelectric phase transition behavior. The mechanism is discussed on the basis of the structure from short to long ranges determined by synchrotron X-ray diffraction and the lattice dynamics probed by Raman spectroscopy. Using a combination of experimental results and first-principles calculations, we explain the phase transition. Ti vibration of TiO$$_6$$ octahedral units is frozen in the ferroelectric phase and the space group changes from nonpolar $$C2/m$$ to polar $$C2$$.

Oral presentation

Ferroelectricity induced by a combination of crystallographic chirality and electric toroidal moment

Nagai, Takayuki*; Hagihara, Masato; Yokoi, Rie*; Moriwake, Hiroki*; Kimura, Tsuyoshi*

no journal, , 

no abstracts in English

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