Structural transformation in antiferroelectric PbZrO3-relaxor ferroelectric Pb(Ni1/3 Nb2/3)O3 solid solution system

Wirunchit, S.; Vittayakorn, N.

doi:10.1063/1.2956598

Structural transformation in antiferroelectric PbZrO3-relaxor ferroelectric Pb(Ni1/3 Nb2/3)O3 solid solution system

Author(s)

Wirunchit, S.

Vittayakorn, N.

Date Issued

August 12, 2008

Type

Article

DOI

10.1063/1.2956598

Abstract

The solid solution between the antiferroelectric (AFE) PbZrO3 (PZ) and the relaxor ferroelectric (FE) Pb (Ni1/3Nb 2/3)O3 (PNN) was synthesized by the columbite precursor method. The crystal structure, phase transformations, and dielectric and thermal properties of (1-x) PZ-xPNN where x=0.00-0.30 were investigated. With these data, the FE phase diagram between PZ and PNN has been established. The crystal structure data obtained from X-ray diffraction indicate that the solid solution PZ-PNN, where x=0.00-0.30, successively transforms from orthorhombic to rhombohedral symmetry with an increase in the PNN concentration. The AFE phase→FE phase transition occurs in compositions of 0.00≤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. Apparently the replacement of the Zr⁴⁺ ion by Ni ²⁺/Nb⁵⁺ ions decreases the driving force for an antiparallel shift of Pb²⁺ ions because they interrupt the translational symmetry and facilitates the appearance of a rhombohedral FE phase when the amount of PNN is higher than 8 mol %. © 2008 American Institute of Physics.

Citation

Journal of Applied Physics, 104(2), 2008