Department of Physics, Istanbul Technical University, Maslak, Istanbul, Turkey
Abstract:
This study examines a linear variation of the specific heat CP with the frequency shifts 1/ν(∂ν/∂T) for the Brillouin frequencies of the L-mode 010], 001] and 100] in the ferroelectric phase of NaNO2 according to our spectroscopically modified Pippard relation. We obtain this linear relationship for those modes studied and calculate dTC/dP in the ferroelectric phase of NaNO2. Our calculated values of dTC/dP for the 001] and 100] modes are in good agreement with the values given in the literature.