Raman Scattering and Lattice-Dynamical Calculations of Alkali-Metal Sulfates

Authors

D. Liu, University of Nebraska-Lincoln
H. M. Lu, University of Nebraska-Lincoln
John R. Hardy, University of Nebraska-Lincoln
F. G. Ullman, University of Nebraska-Lincoln

Document Type

Article

Date of this Version

1991

Citation

Physical Review B (1991): 7,387-7,393

Comments

Copyright © 1990, American Physical Society. Used by permission

Abstract

Raman-scattering measurements on single crystals of K₂SO₄, Rb₂SO₄, and Cs₂SO₄ have been made at both room and liquid-nitrogen temperatures. Lattice-dynamical calculations, based on a rigid-ion model using the Gordon-Kim method to calculate the short-range potentials, were performed. The influence of the alkali-metal ions on the lattice-dynamical properties of the crystals is discussed.