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Polarization Rotation and Monoclinic Distortion in Ferroelectric (Bi0.5Na0.5)TiO3–BaTiO3 Single Crystals under Electric Fields

1
Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo 153-8904, Japan
2
Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashihiroshima, Hiroshima 739-8526, Japan
*
Author to whom correspondence should be addressed.
Crystals 2014, 4(3), 273-295; https://doi.org/10.3390/cryst4030273
Received: 1 May 2014 / Revised: 26 June 2014 / Accepted: 27 June 2014 / Published: 16 July 2014
(This article belongs to the Special Issue Piezoelectric Crystals)
The features of the crystal structures and spontaneous polarization (Ps) under an electric field (E) have been reviewed for (1 − x)(Bi0.5Na0.5)TiO3xBaTiO3 (BNT–BT). In-situ measurements of high-resolution synchrotron radiation X-ray diffraction (SR-XRD) under electric fields show that single crystals with x = 0 (BNT) and 5% have a monoclinic distortion in space group Cc at 25 °C. The SR-XRD study combined with density functional theory (DFT) calculations demonstrates that BNT–5%BT exhibits a rotation of Ps in the monoclinic ac plane by 2° under an E of 70 kV/cm along the <001> pseudo-cubic direction, which is much larger than BNT. View Full-Text
Keywords: ferroelectric crystals; bismuth sodium titanate; BNT; spontaneous polarization; X-ray diffraction; synchrotron radiation X-ray diffraction; DFT; monoclinic; rhombohedral ferroelectric crystals; bismuth sodium titanate; BNT; spontaneous polarization; X-ray diffraction; synchrotron radiation X-ray diffraction; DFT; monoclinic; rhombohedral
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MDPI and ACS Style

Ogino, M.; Noguchi, Y.; Kitanaka, Y.; Miyayama, M.; Moriyoshi, C.; Kuroiwa, Y. Polarization Rotation and Monoclinic Distortion in Ferroelectric (Bi0.5Na0.5)TiO3–BaTiO3 Single Crystals under Electric Fields. Crystals 2014, 4, 273-295. https://doi.org/10.3390/cryst4030273

AMA Style

Ogino M, Noguchi Y, Kitanaka Y, Miyayama M, Moriyoshi C, Kuroiwa Y. Polarization Rotation and Monoclinic Distortion in Ferroelectric (Bi0.5Na0.5)TiO3–BaTiO3 Single Crystals under Electric Fields. Crystals. 2014; 4(3):273-295. https://doi.org/10.3390/cryst4030273

Chicago/Turabian Style

Ogino, Motohiro; Noguchi, Yuji; Kitanaka, Yuuki; Miyayama, Masaru; Moriyoshi, Chikako; Kuroiwa, Yoshihiro. 2014. "Polarization Rotation and Monoclinic Distortion in Ferroelectric (Bi0.5Na0.5)TiO3–BaTiO3 Single Crystals under Electric Fields" Crystals 4, no. 3: 273-295. https://doi.org/10.3390/cryst4030273

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