( 1994 ), Shock experiments on pre-heated alpha- and beta-quartz: II. X-ray and TEM investigations , Earth Planet. Sci. Lett. , 128 , 683 – ... F Langenhorst - 《Earth & Planetary Science Letters》 被引量: 202发表: 1994年 Shock experiments on pre-heated a- and/3-quartz: I....
Thermodynamic quantities are calculated as a function of temperature by using Landau mean-field model for the \(\upalpha \)–\(\upbeta \) transition in quartz. By expanding the Gibbs free energy in terms of the order parameter (Q) with the cubic term (\(Q^{3}),\) the temperature dep...
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Piezoelectric Constants of Alpha- and Beta-Quartz at Various Temperatures The adiabatic piezoelectric constants dand dof alpha-quartz have been measured between room temperature and 571.5°C. At the latter temperature, dis about one-half of its room temperature value, whereas dhas increased by a fa...