LATTICE DYNAMICAL INVESTIGATIONS FOR RAMAN AND THE INFRARED FREQUENCIES OF Cs2HgCl4-Reference-Cited by-同舟云学术

LATTICE DYNAMICAL INVESTIGATIONS FOR RAMAN AND THE INFRARED FREQUENCIES OF Cs2HgCl4

Published:2013-01 Issue: Volume:22 Page:694-700
ISSN:2010-1945
Container-title:International Journal of Modern Physics: Conference Series
language:en
Short-container-title:Int. J. Mod. Phys. Conf. Ser.

Author:

GARG SHAVEEN¹,SINHA M. M.¹,GUPTA H. C.²

Affiliation:

1. Department of Physics, Sant Longowal Institute of Engineering and Technology, Longowal Sangrur. Punjab 148106, India

2. Department of Physics, Institute of Technology Delhi Hauz Khas, New Delhi 110016, India

Abstract

A short-range force constant model has been applied in investigating the Raman and infrared modes in insulating Cs2HgCl4 in orthorhombic phase having space group Pnam using normal coordinate analysis. Calculations on zone centre phonons have been made with twelve stretching and three bending force constants. The calculated Raman and infrared wave numbers are in good agreement with the available experimental results. The potential energy distribution has also been investigated for determining the significance of contribution from each force constant towards the Raman and the infrared wave numbers.

Publisher

World Scientific Pub Co Pte Lt

Link

https://www.worldscientific.com/doi/pdf/10.1142/S2010194513010878

Reference6 articles.

1. Pressure-induced ferroelastic instability and lattice dynamics ofCs2HgCl4crystals within the semiempirical rigid-ion model

2. Disorder in the Crystal Structure of Cs2HgCl4 Studied by the Maximum Entropy Method

3. Cs2HgCl4 crystal as a new material for acoustooptical applications

4. Soft-mode-driven lattice instabilities in Cs2HgCl4crystal: phenomenological treatment and far-infrared spectroscopy of the structurally modulated phases

5. Optically Active Lattice Vibrations as Treated by the GF‐Matrix Method

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