Light Scattering Near Structural Phase Transition Points in Pure Crystals and in Crystals Containing Defects

1979 ◽  
pp. 331-346
Author(s):  
V. L. Ginzburg ◽  
A. P. Levanyuk ◽  
A. A. Sobyanin ◽  
A. S. Sigov
Keyword(s):  
Phase Transition ◽  
Light Scattering ◽  
Structural Phase Transition ◽  
Structural Phase ◽  
Transition Points

Crystal Symmetry Dependence of the Polarization of Brillouin Scattered Light

1998 ◽  
Vol 12 (29n31) ◽  
pp. 3418-3422
Author(s):  
J. T. Wang ◽  
F. Tang ◽  
R. Tashakkori ◽  
V. H. Schmidt ◽  
T. P. Chen
Keyword(s):  
Phase Transition ◽  
Light Scattering ◽  
Structural Phase Transition ◽  
Phonon Mode ◽  
Brillouin Scattering ◽  
Scattered Light ◽  
Structural Phase ◽  
Phonon Modes ◽  
Orthorhombic Crystal ◽  
Insight Into

The Brillouin scattering is the light scattering by the phonons in the solid. It is very useful for studying the structural phase transition in the crystal and measuring the elastic and photoelastic constants of the materials. To accomplish these goals, one has to be able to determine the linkage between the polarization of the scattered light and the phonon modes which can also provide insight into the origin of the phase transition. In our paper, we calculated the scattering factors using elastic equations, photoelastic relation and radiation equations for an orthorhombic crystal. The results are summerized in the Chart. From the Chart provided below one can easily find the correspondence of the phonon mode to the polarization of the scattered light.

Incommensurate structural phase transition in BaMnF4: Light scattering from phasons

1982 ◽  
Vol 25 (3) ◽  
pp. 1791-1804 ◽  
Author(s):  
K. B. Lyons ◽  
R. N. Bhatt ◽  
T. J. Negran ◽  
H. J. Guggenheim
Keyword(s):  
Phase Transition ◽  
Light Scattering ◽  
Structural Phase Transition ◽  
Structural Phase

Specific Features of Brillouin Spectra at a High-Temperature Phase Transition in Cs5H3(SO4)4xnH2O Crystals

2006 ◽  
Vol 115 ◽  
pp. 279-284 ◽  
Author(s):  
A.I. Fedoseev ◽  
S.G. Lushnikov ◽  
J.H. Ko ◽  
Seiji Kojima ◽  
L.A. Shuvalov
Keyword(s):  
Phase Transition ◽  
Light Scattering ◽  
Structural Phase Transition ◽  
Structural Phase ◽  
Anomalous Behavior ◽  
High Temperature Phase ◽  
Temperature Phase ◽  
Brillouin Light Scattering ◽  
First Order ◽  
Mode Behavior

This paper presents detailed Brillouin light scattering studies of the acoustic response of a Cs5H3(SO4)4xnH2O (PCHS) crystal in the vicinity of a superionic (superprotonic) structural phase transition of the first order. Just above the phase transition, splitting of the Brillouin doublet is observed. The ‘two-mode’ behavior of the longitudinal acoustic phonon can be explained by coexistence of phases at a structural phase transition of the first order. Above the phase transition, in the superionic phase, an additional doublet forbidden by the selection rules appears in a narrow temperature interval. It is concluded that an anomalous behavior of Brillouin light scattering can be attributed to the influence of dynamically disordered protons on the phonon subsystem.

Structural Phase Transition of Multilayer VSe2

2020 ◽  
Vol 12 (22) ◽  
pp. 25143-25149 ◽  
Author(s):  
Dian Li ◽  
Xiong Wang ◽  
Chi-ming Kan ◽  
Daliang He ◽  
Zejun Li ◽  
...  
Keyword(s):  
Phase Transition ◽  
Structural Phase Transition ◽  
Structural Phase

scholarly journals Raman spectroscopy study of the behavior of the soft mode in a structural phase transition in the Pr3Sb5O12 crystal

2015 ◽  
Vol 57 (11) ◽  
pp. 2286-2289 ◽  
Author(s):  
A. S. Oreshonkov ◽  
A. K. Khodzhibaev ◽  
A. S. Krylov ◽  
M. F. Umarov ◽  
A. N. Vtyurin
Keyword(s):  
Phase Transition ◽  
Raman Spectroscopy ◽  
Structural Phase Transition ◽  
Soft Mode ◽  
Structural Phase ◽  
Spectroscopy Study

High-pressure structural phase transition and metallization in Ga2S3 under non-hydrostatic and hydrostatic conditions up to 36.4 GPa

2021 ◽  
Author(s):  
Linfei Yang ◽  
Jianjun Jiang ◽  
Lidong Dai ◽  
Haiying Hu ◽  
Meiling Hong ◽  
...  
Keyword(s):  
Phase Transition ◽  
Raman Spectroscopy ◽  
High Pressure ◽  
Structural Properties ◽  
Structural Phase Transition ◽  
First Principles ◽  
Theoretical Calculations ◽  
Structural Phase

The vibrational, electrical and structural properties of Ga2S3 were explored by Raman spectroscopy, EC measurements, HRTEM and First-principles theoretical calculations under different pressure environments up to 36.4 GPa.

scholarly journals Study of the structural phase transition in diamond (100) & (111) surfaces

Carbon Trends ◽  
2021 ◽  
Vol 3 ◽  
pp. 100033
Author(s):  
H. Gomez ◽  
M.N. Groves ◽  
M.R. Neupane
Keyword(s):  
Phase Transition ◽  
Structural Phase Transition ◽  
Structural Phase
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