Vibrational properties of Cs4 W11 O35 and Rb4 W11 O35 systems: high pressure and polarized Raman spectra

2011 ◽  
Vol 42 (3) ◽  
pp. 474-481 ◽  
Author(s):  
K. Pereira da Silva ◽  
W. Paraguassu ◽  
M. Maczka ◽  
A. G. Souza Filho ◽  
P. T. C. Freire ◽  
...  
Keyword(s):  
High Pressure ◽  
Raman Spectra ◽  
Vibrational Properties ◽  
Polarized Raman

Polarized Raman spectra of KIO4 and RbIO4 and high-pressure Raman studies on KIO4

1991 ◽  
Vol 22 (10) ◽  
pp. 567-571 ◽  
Author(s):  
T. A. Al Dhahir ◽  
H. L. Bhat ◽  
P. S. Narayanan ◽  
A. Jayaraman
Keyword(s):  
High Pressure ◽  
Raman Spectra ◽  
Polarized Raman

High-pressure polarized Raman spectra of Gd2 (MoO4 )3 : phase transitions and amorphization

2011 ◽  
Vol 42 (3) ◽  
pp. 452-460 ◽  
Author(s):  
Guy Lucazeau ◽  
Olivier Le Bacq ◽  
Alain Pasturel ◽  
Pierre Bouvier ◽  
Thierry Pagnier
Keyword(s):  
High Pressure ◽  
Phase Transitions ◽  
Raman Spectra ◽  
Polarized Raman

Lattice Vibrational Properties of SrBi2Ta2O9

2000 ◽  
Vol 655 ◽  
Author(s):  
Ran Liu ◽  
Pengdi Han
Keyword(s):  
Single Crystal ◽  
Raman Spectra ◽  
Random Access ◽  
Light Polarization ◽  
Dielectric Behavior ◽  
Layered Perovskite ◽  
Vibrational Properties ◽  
Raman Modes ◽  
Polarized Raman ◽  
Lower Temperature

AbstractSrBi2Ta2O9 is one of the layered perovskite ferroelectrics with excellent fatigue resistance and thus has gained great interest of semiconductor industries recently in non-volatile ferroelectric random access memory (FERAM) applications. The understanding of the lattice vibrational properties of this material can provide crucial information on its structure and dielectric behavior. In this work, we carried out Raman spectroscopy study of thin film, powder and single crystal SrBi2Ta2O9. At temperatures above the Curie temperature, all 12 Raman modes expected from the tetragonal (I4/mmm) structure have been observed and assigned to the 4 A1g, 6 Eg and 2 B1g modes based the polarized Raman spectra from the single crystal samples. At lower temperature, the Raman spectra have revealed all 22 A1 modes, but only 3 out of the 20 A2 modes and 5 out of the 42 B1/B2 modes were observed in the ferroelectric phase (A21am). The soft mode was found to be of A1 symmetry and appearing only when light polarization lay in the ab-plane.

Nitroethane at high density: an experimental and computational vibrational study

2021 ◽  
Vol 23 (15) ◽  
pp. 9325-9336
Author(s):  
Akio Yoshinaka ◽  
Serge Desgreniers ◽  
Anguang Hu
Keyword(s):  
High Pressure ◽  
Raman Spectra ◽  
Vibrational Spectra ◽  
Unit Cell ◽  
High Density ◽  
Monoclinic Unit Cell ◽  
Vibrational Study

Raman and IR vibrational spectra confirm two molecular units associated with the monoclinic unit cell of nitroethane under high pressure. Raman spectra are extremely sensitive to predicted effects of unit cell distortion due to changes in H-bonding.

scholarly journals High-pressure structural and vibrational properties of monazite-type BiPO4, LaPO4, CePO4, and PrPO4

2018 ◽  
Vol 30 (6) ◽  
pp. 065401 ◽  
Author(s):  
D Errandonea ◽  
O Gomis ◽  
P Rodríguez-Hernández ◽  
A Muñoz ◽  
J Ruiz-Fuertes ◽  
...  
Keyword(s):  
High Pressure ◽  
Vibrational Properties

Infrared and Polarized Raman Spectra of (C5H7N2)6Mo7O24 · 3H2O

1994 ◽  
Vol 112 (1) ◽  
pp. 132-138 ◽  
Author(s):  
Mary Isaac ◽  
T. Pradip ◽  
V.U. Nayar
Keyword(s):  
Raman Spectra ◽  
Polarized Raman

Polarized Raman spectra and intermolecular potential of DL-alanine crystal

1978 ◽  
Vol 7 (4) ◽  
pp. 188-193 ◽  
Author(s):  
Katsunosuke Machida ◽  
Akira Kagayama ◽  
Yutaka Saito
Keyword(s):  
Raman Spectra ◽  
Intermolecular Potential ◽  
Polarized Raman
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