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Pippard relations for cubic gauche nitrogen
(2016)
The Pippard relations (CP vs. ?P and ?P vs. ?T) are examined at various temperatures up to 1200 K at zero pressure (P = 0) for the cubic gauche nitrogen. The specific heat (CP) is related to the thermal expansion (?P) and ...
Calculation of the soft-mode frequency for the alpha – beta transition in quartz
(Elsevier, 2016)
The ? – ß 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 ...