Two-magnon Raman scattering in CdxMn1xF2 mixed crystals

Abstract
Results of two-magnon Raman scattering in Cdx Mn1x F2 mixed crystals are presented for concentration 0≤x≤0.1 in the temperature range 9 K≤T≤70 K. The temperature and composition dependencies of the spectra are interpreted in the Ising cluster model approximation. This theory gives linewidths, line shapes, and frequencies that are in good agreement with experiment. Exchange integrals with the next-nearest magnetic neighbors are evaluated for all the samples investigated.