Study on the Possibility of Vitrification and Phase Transition in Decursinol Studied by Using Brillouin Light Scattering

2013 ◽  
Vol 63 (4) ◽  
pp. 444-448 ◽  
Author(s):  
Jae-Hyeon KO* ◽  
Tae Hyun KIM ◽  
Se Hoon JUNG ◽  
Jong-Gab JUN
Keyword(s):  
Phase Transition ◽  
Light Scattering ◽  
Brillouin Light Scattering

Isomorphous phase transition of 1,2,4,5-tetrabromobenzene jumping crystals studied by Brillouin light scattering

2013 ◽  
Vol 173 ◽  
pp. 46-50 ◽  
Author(s):  
Jae-Hyeon Ko ◽  
Kwang-Sei Lee ◽  
Subash Chandra Sahoo ◽  
Panče Naumov
Keyword(s):  
Phase Transition ◽  
Light Scattering ◽  
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.

scholarly journals Brillouin light scattering anomalies and new phase transition in Cs5H3(SO4)4 crystals

2000 ◽  
Vol 113 (11) ◽  
pp. 639-642 ◽  
Author(s):  
S.G Lushnikov ◽  
V.H Schmidt ◽  
L.A Shuvalov ◽  
V.V Dolbinina
Keyword(s):  
Phase Transition ◽  
Light Scattering ◽  
Brillouin Light Scattering ◽  
New Phase
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