Raman Scattering and Lattice-Dynamical Calculations of Crystalline KNO₃

Authors

D. Liu, University of Nebraska - Lincoln
F. G. Ullman, University of Nebraska - Lincoln
John R. Hardy, University of Nebraska - LincolnFollow

Date of this Version

1992

Comments

Published in Phys. Rev. B 45, 2142 - 2147 (1992). Copyright © 1992 The American Physical Society. Used by permission.

Abstract

The Raman spectrum of a KNO₃ single crystal was measured at both room and liquid-nitrogen temperatures. Lattice-dynamical calculations, based on the rigid-ion approximation and empirical potentials, were performed. The possibility of a phase transition at 217 K was investigated by measuring the temperature dependence of the Raman spectrum.