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Aso, Seiyu*; Matsuo, Hiroki*; Yoneda, Yasuhiro; Morikawa, Daisuke*; Tsuda, Kenji*; Oyama, Kenji*; Ishigaki, Toru*; Noguchi, Yuji*
Physical Review B, 111(17), p.174114_1 - 174114_12, 2025/05
We investigate the crystal structures, phase transitions, and phase stability of undoped and Ca-modified NaNbO through a combined analysis of high-resolution synchrotron radiation X-ray and neutron diffraction, convergent-beam electron diffraction, and density functional theory (DFT) calculations. It is demonstrated that the antiferroelectric (AFE)-
phase is stabilized over a wide temperature range of 200 to 800 K by Ca modification, and that the NaNbO
is stabilized by temperature-driven isostatic pressure accompanied by lattice expansion, whereas the Ca-modified NaNbO
is induced by composition-induced chemical pressure along with lattice shrinkage.
Katsumata, Tetsuhiro*; Suzuki, Ryo*; Sato, Naoto*; Oda, Ryoya*; Motoyama, Shingo*; Suzuki, Shumpei*; Nakashima, Mamoru*; Inaguma, Yoshiyuki*; Mori, Daisuke*; Aimi, Akihisa*; et al.
Chemistry of Materials, 36(8), p.3697 - 3704, 2024/04
Times Cited Count:1 Percentile:35.94(Chemistry, Physical)A perovskite-type oxynitride BaFeOF was prepared by high-pressure synthesis. Since the SHG signal was observed in the obtained material, suggesting the existence of spontaneous polarization, the mechanism of polarization was investigated by synchrotron high-energy X-ray diffraction. The obtained pair distribution functions were fitted, and a local polarization mechanism with different orientations was found. Since BaFeO
F is also a magnetic material, a magnetic domain and a ferroelectric domain are considered to coexist.
Yoneda, Yasuhiro; Matsumoto, Norimasa; Terauchi, Hikaru*; Yasuda, Naohiko*
Journal of Physics; Condensed Matter, 15(3), p.467 - 474, 2003/01
Times Cited Count:6 Percentile:34.90(Physics, Condensed Matter)Thermal properties of ordered and disordered Pb(InNb
)O
(PIN) single clystals were investigated. The defect-induced phase separation provided a good agreement of the instability of the relaxor nd antiferroelectric states of the PIN crystals.
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Journal of the Physical Society of Japan, 56(2), p.831 - 832, 1987/02
Times Cited Count:23 Percentile:97.70(Physics, Multidisciplinary)no abstracts in English
Ferroelectrics, 66, p.269 - 286, 1986/00
no abstracts in English
Ferroelectrics, 64, p.97 - 106, 1985/00
no abstracts in English
Japanese Journal of Applied Physics, 24(SUPPL.24-2), p.387 - 389, 1985/00
Times Cited Count:110 Percentile:96.23(Physics, Applied)no abstracts in English
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Japanese Journal of Applied Physics, 24(SUPPL.24-2), p.844 - 846, 1985/00
no abstracts in English
Journal of the Physical Society of Japan, 54(10), p.3694 - 3696, 1985/00
Times Cited Count:35 Percentile:90.61(Physics, Multidisciplinary)no abstracts in English
; Ozawa, K.
Journal of the Physical Society of Japan, 53(12), p.4405 - 4412, 1984/00
Times Cited Count:7 Percentile:59.45(Physics, Multidisciplinary)no abstracts in English
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Journal of the Physical Society of Japan, 53(12), p.4271 - 4278, 1984/00
Times Cited Count:31 Percentile:85.30(Physics, Multidisciplinary)no abstracts in English
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Journal of the Physical Society of Japan, 53(5), p.1863 - 1865, 1984/00
Times Cited Count:5 Percentile:52.42(Physics, Multidisciplinary)no abstracts in English
Journal of the Physical Society of Japan, 53(5), p.1602 - 1605, 1984/00
Times Cited Count:9 Percentile:70.48(Physics, Multidisciplinary)no abstracts in English
Journal of the Physical Society of Japan, 52(10), p.3322 - 3324, 1983/00
Times Cited Count:10 Percentile:79.50(Physics, Multidisciplinary)no abstracts in English
; Ozawa, K.; ;
Journal of the Physical Society of Japan, 52(7), p.2538 - 2543, 1983/00
Times Cited Count:23 Percentile:81.52(Physics, Multidisciplinary)no abstracts in English
Journal of the Physical Society of Japan, 51(4), p.1043 - 1044, 1982/00
Times Cited Count:27 Percentile:90.70(Physics, Multidisciplinary)no abstracts in English
Journal of the Physical Society of Japan, 51(3), p.701 - 702, 1982/00
Times Cited Count:12 Percentile:77.79(Physics, Multidisciplinary)no abstracts in English
Journal of the Physical Society of Japan, 51(1), p.203 - 207, 1982/00
Times Cited Count:94 Percentile:95.56(Physics, Multidisciplinary)no abstracts in English
Journal of the Physical Society of Japan, 51(7), p.2051 - 2052, 1982/00
Times Cited Count:17 Percentile:83.95(Physics, Multidisciplinary)no abstracts in English
Journal of the Physical Society of Japan, 51(8), p.2532 - 2537, 1982/00
Times Cited Count:37 Percentile:87.96(Physics, Multidisciplinary)no abstracts in English