Resonant frequency shifts related to the elastic constants near the alpha-beta transition in quartz

YURTSEVEN H. H., Ates S.

JOURNAL OF MOLECULAR STRUCTURE, vol.1179, pp.421-424, 2019 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 1179
  • Publication Date: 2019
  • Doi Number: 10.1016/j.molstruc.2018.11.044
  • Journal Name: JOURNAL OF MOLECULAR STRUCTURE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.421-424
  • Keywords: Resonance frequency shifts, Elastic constants, alpha-beta transition, Quartz, SOFT-MODE FREQUENCY, INCOMMENSURATE PHASE, NEUTRON-SCATTERING, HEAT-CAPACITY
  • Middle East Technical University Affiliated: Yes

Abstract

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.