scholarly journals Crossover in the mechanism of ferroelectric phase transition ofPb[(Mg1/3Nb2/3)1−xTix]O3single crystals studied by Brillouin light scattering

2010 ◽  
Vol 82 (10) ◽  
Author(s):  
Jae-Hyeon Ko ◽  
Do Han Kim ◽  
Shinya Tsukada ◽  
Seiji Kojima ◽  
Alexei A. Bokov ◽  
...  
Keyword(s):  
Phase Transition ◽  
Light Scattering ◽  
Ferroelectric Phase Transition ◽  
Ferroelectric Phase ◽  
Brillouin Light Scattering

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

2015 ◽  
Vol 05 (02) ◽  
pp. 1550011
Author(s):  
Seonhyeop Shin ◽  
Jae-Hyeon Ko ◽  
Shinya Tsukada ◽  
Yukikuni Akishige ◽  
Krystian Roleder ◽  
...  
Keyword(s):  
Phase Transition ◽  
Light Scattering ◽  
Lead Titanate ◽  
Ferroelectric Phase Transition ◽  
Ferroelectric Phase ◽  
Paraelectric Phase ◽  
Dielectric Measurements ◽  
Brillouin Light Scattering ◽  
Acoustic Damping ◽  
Lower Temperature

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.

Dynamical mechanism of the ferroelectric phase transition ofSrTi18O3studied by light scattering

2003 ◽  
Vol 68 (1) ◽  
Author(s):  
Hiroki Hasebe ◽  
Yuhji Tsujimi ◽  
Ruiping Wang ◽  
Mitsuru Itoh ◽  
Toshirou Yagi
Keyword(s):  
Phase Transition ◽  
Light Scattering ◽  
Ferroelectric Phase Transition ◽  
Ferroelectric Phase ◽  
Dynamical Mechanism

Anomalous light scattering at the ferroelectric phase transition of KH2PO4

1973 ◽  
Vol 7 (2) ◽  
pp. 139-141 ◽  
Author(s):  
C.Y. She ◽  
B.G. Deuto ◽  
L.S. Wall ◽  
David F. Edwards
Keyword(s):  
Phase Transition ◽  
Light Scattering ◽  
Ferroelectric Phase Transition ◽  
Ferroelectric Phase
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