Abstract
Raman scattering measurements in the CdSiP2 single crystal have been performed under hydrostatic pressure up to 72 Kbar. Eleven first-order and three second-order Raman peaks have been studied. From the shift of Raman peaks, Grüneisen parameters were obtained. Based on Grüneisen parameters, phonon modes are examined and related to the modes in the zincblende-type binary analog. In addition, the pressure-induced changes in the Raman intensity and half-width have been examined. Furthermore, the discussion includes the soft-mode phonon and the density of the phonon state.
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