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 - LincolnFollow
F. G. Ullman, University of Nebraska - Lincoln

Date of this Version

1991

Comments

Published in Phys. Rev. B , 7387 - 7393 (1991). Copyright © 1990 The 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.