Effect of Compositional Variations on Field-Induced Phase Transition of (Pb,La)(Zr,Sn,Ti)O3 Antiferroelectric Ceramics

ISSN： 0015-0193

Source： Ferroelectrics, Vol.355, Iss.1, 2007-01, pp. : 71-76

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Abstract

(Pb,La)(Zr,Sn,Ti)O3 ceramics near AFE-FE phase boundary were studied as a function of composition, electric field and temperature. Below the critical temperature TFE - AFE of FE to AFE phase transition, the electric field-induced FE state can maintain metastable state when electric field was removed. As temperature increased over TFE - AFE, the metastable FE recovered to AFE. As Ti content increased, the structure of unpoled PZST ceramics changed from tetragonal AFE phase to rhombohedral FE phase, the temperature TFE - AFE increased, while the switching field EAFE - FE and EFE - AFE decreased. The forward switching field EAFE - FE and hysteresis Δ E were observed to be dependent on TFE - AFE and Tc, respectively.