Calorimetric investigations of second order ferroelectric transitions

Abstract

Calorimetric studies employing small temperature intervals were made of the second order ferroelectric transitions in triglycine sulfate and Rochelle salt. No evidence of a heat capacity divergence was observed in Rochelle salt. No strong heat capacity divergence was observed in triglycine sulfate, an observation which may be attributed to the quality of the crystals available for study. In triglycine sulfate it was demonstrated that crystal quality can affect the heat capacity measured in the immediate vicinity of the transition.