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Pippard relation close to the alpha - beta transition for quartz in granite
(American Institute of Physics, 2016)
In this study, we examine variation of the thermal expansion αp with the isothermal compressibility KT at various temperatures (1 atm) close to the α-β transition in quartz using the experimental data from the literature. ...
Calculation of the soft-mode frequency for the alpha – beta transition in quartz
The α – β structural transition occurs in quartz at TC = 846 K. The frequency of the soft mode associated with the volume increase, decreases with increasing temperature as the transition temperature is approached. In this ...