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Crossover from antiferroelectric to normal ferroelectric behavior in lead zirconate - lead nickel niobate ceramics prepared by the reaction sintering process
Date Issued
December 1, 2009
Type
Conference Paper
Abstract
The lead zirconate - lead nickel niobate ceramics, (1-x)PbZrO3 - xPb(Ni1/3Nb2/3)O3 (PZ-PNN) with x = 0.00-0.10, have been prepared by reaction sintering. Without any calcination involved, the mixture of raw materials was pressed and sintered directly. The PZ-PNN ceramics could be obtained after 6 h sintering at 1,100-1,250°C. The crystal structure data obtained from XRD indicate that the PZ-PNN, where x = 0.00-0.10, successively transforms from orthorhombic to rhombohedral symmetry with an increase in the PNN concentration around x = 0.08. The antiferroelectric phase (AFE) → ferroelectric phase (FE) transition occurs in compositions of 0.0 ≤ x ≤ 0.08. The AFE → FE phase transition shifts to lower temperatures with higher compositions of x. The FE phase temperature range width increases with increased PNN. Copyright © Taylor & Francis Group, LLC.
Citation
Ferroelectrics, 382(1 PART 3), 135-140, 2009