Abstract
The first-order Raman spectra for A1g and B1g mode in PbCO3 crystal were measured in the room temperature.Using these experimental Raman frequency values, the phonon dispersion curves of PbCO3 were analyzed by use of a modified rigid-ion model. The calculated phonon dispersion curves allowed us to calculate the one phonon density of states and the temperature dependence of the phonon specific heat of PbCO3.
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