Influence of KF substitution on the ferroelectric phase transition of lead titanate single crystals studied by Brillouin light scattering-Reference-Cited by-同舟云学术

Influence of KF substitution on the ferroelectric phase transition of lead titanate single crystals studied by Brillouin light scattering

Published:2015-06 Issue:02 Volume:05 Page:1550011
ISSN:2010-135X
Container-title:Journal of Advanced Dielectrics
language:en
Short-container-title:J. Adv. Dielect.

Author:

Shin Seonhyeop¹,Ko Jae-Hyeon¹,Tsukada Shinya²,Akishige Yukikuni²,Roleder Krystian³,Rytz Daniel⁴

Affiliation:

1. Department of Physics, Hallym University, Hallymdaehakgil 39, Chuncheon, Gangwondo 200-702, Republic of Korea

2. Faculty of Education, Shimane University, Matsue-Shi, Shimane 690-8504, Japan

3. Institute of Physics, University of Silesia, ulica Uniwersytecka 4, PL-40-007 Katowice, Poland

4. Forschungsinstitut für mineralische und metallische Werkstoffe, Edelsteine/Edelmetalle GmbH (FEE), Struthstraβe 2, D-55743 Idar-Oberstein, Germany

Abstract

The elastic properties of KF-substituted perovskite lead titanate ( PbTiO 3) were investigated by dielectric measurements and Brillouin light scattering. The ferroelectric phase transition occurred at substantially lower temperature due to KF substitution, which was attributed to the modification of the covalency in Pb – O and Ti – O bonds. The longitudinal acoustic (LA) mode of KF-substituted PbTiO 3 showed a frequency softening in the paraelectric phase, which was accompanied by increasing acoustic damping. This indicated that polarization fluctuations responsible for the acoustic anomalies were enhanced by KF substitution.

Publisher

World Scientific Pub Co Pte Lt

Subject

Electrical and Electronic Engineering,Condensed Matter Physics,Ceramics and Composites,Electronic, Optical and Magnetic Materials

Link

https://www.worldscientific.com/doi/pdf/10.1142/S2010135X15500113

Reference25 articles.

1. Soft Ferroelectric Modes in Lead Titanate

2. Raman Studies of Underdamped Soft Modes in PbTiO3

3. Direct observation of the soft mode in the paraelectric phase ofPbTiO3by confocal micro-Raman scattering

4. Nature of the ferroelectric phase transition inPbTiO3

5. Order–disorder character of PbTiO3