The Influence of Surface Effects on the Pyroelectric Behaviour of T. G. S. Close to the Phase Transition

Abstract

From the study of pyroelectric coefficient p* during constant-rate-temperature-increase (0,03-1,5 °C.s-1) its thickness dependence was found (for the thickness decrease from 3 mm to 0,4 mm p* decreases eight times) and explained by the influence of ferroelectrically inactive surface layers. The effect is to be expected at any measuring method

Voltage controlled awakening of memristor-like dynamic current–voltage loops of ferroelectric triglycine sulfate

“…The results of investigations of dielectric [44,45] and ferroelectric [46] properties as well as pyroelectric characteristics [47] of TGS samples with different electrode materials were interpreted taking into account the effect of ferroelectrically inactive surface layers with low dielectric permittivity, which operate as under-electrode surface capacitors [45,47]. The nature and physical properties of such reconstructed surface layer with reduced effective dielectric permittivity [29,38], often referred to as the "dead layer" [48], have been discussed earlier [29,38,48].…”

“…The nature and physical properties of such reconstructed surface layer with reduced effective dielectric permittivity [29,38], often referred to as the "dead layer" [48], have been discussed earlier [29,38,48]. Note that the studies [44][45][46][47] were performed using the samples with different electrode materials, but with identical electrodes (e.g., Ag-paint in [44,45]). Known studies of currentvoltage characteristics under polarization reversal [49] and steady-state current-voltage characteristics [50] were also carried out for TGS samples with identical electrodes (e.g., Au in [50]).…”