JOURNAL OF MOLECULAR STRUCTURE, vol.1179, pp.421-424, 2019 (Journal Indexed in SCI)
Article / Article
Title of Journal :
JOURNAL OF MOLECULAR STRUCTURE
Resonance frequency shifts, Elastic constants, alpha-beta transition, Quartz, SOFT-MODE FREQUENCY, INCOMMENSURATE PHASE, NEUTRON-SCATTERING, HEAT-CAPACITY
The resonant frequency shifts of vibrational modes are related to the elastic constants at various temperatures for the alpha-beta transition in quartz (T-c = 573.0 degrees C for alpha-quartz and 574.3 degrees C for beta-quartz). This correlation is constructed on the basis of the spectroscopic modifications of the Pippard relations near the alpha-beta transition in quartz by using the observed data from the literature.