DIELECTRIC-PROPERTIES OF (PMN)((1-X))(PT)(X) SINGLE-CRYSTALS FOR VARIOUS ELECTRICAL AND THERMAL HISTORIES

Dielectric investigations of the (PMN)((1-x))(PT)(x) crystalline solut ion have been performed for various electrical histories. For x<0.3, r elaxer behavior was observed, however the degree of diffuseness in the dielectric maximum and degree of relaxer characteristics were decreas ed with increasing x. Application of de bias for x<0.33 (x(c)) resulte d in an induced transformation to a long-range ferroelectric state. Th is transition had a critical threshold field (E-th) The value of E-th depended on x. For all x<x(c), glasslike behavior was observed in the nonergodic temperature range for E<E-th. (C) 1998 American Institute o f Physics.