Mise en évidence d'un champ électrique critique dans le comportement pyroélectrique de T. G. S.

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Abstract
In this paper, a new dynamical method for pyroelectric measurement is used to investigate the effect of a biasing field on the pyroelectric behavior of a single crystal of TGS held at different stabilized temperatures. The correlation technique and the use of very low noise amplifiers for our detector result in very good signal to noise ratios. With this method, we show the existence of a critical field Ecr which is necessary to move the domain walls, and a minimal field Em which is required to produce a single domain state