Ai. Otko et al., THERMO-ELECTRIC AND MECHANO-ELECTRIC EFFECTS IN LITHIUM TANTALATE CRYSTALS, Ferroelectrics. Letters section, 18(3-4), 1994, pp. 127-132
The nondestructive and reversible formation of electrooptical inhomoge
nuities in Y-cut lithium tantalate plates undergoing fast cooling or i
nfluence of local elastic stress has been investigated. The behaviour
of charges within nearsurface layer inherent in both phenomena resembl
es the features of electret states.