The first-order Raman spectra for
A1g and
B1g mode in PbCO
3 crystal were measured in the room temperature.Using these experimental Raman frequency values, the phonon dispersion curves of PbCO
3 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 PbCO
3.
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