Acoustic emission and dielectric studies of phase transitions within the morphotropic phase boundary of xPb (Zr1/2 Ti1/2) O 3 - (1-x) Pb (Ni1/3 Nb2/3) O3 relaxor ferroelectrics

E. Dul'kin*, E. Mojaev, M. Roth, O. Khamman, X. Tan

*Corresponding author for this work

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Abstract

We have carried out a combined acoustic emission (AE) and dielectric permittivity study of the xPb (Zr1/2 Ti1/2) O3 - (1-x) Pb (Ni1/3 Nb2/3) O3 relaxor ferroelectric ceramics with compositions x=0.7-0.9 corresponding to its morphotropic phase boundary. Temperatures of all phase transitions occurring on heating are identified accurately by AE, and a direct transition between the low-temperature (rhombohedral) and high-temperature (pseudocubic) relaxor phases is found. The AE peak intensity is generally proportional to the temperature derivative of the dielectric permittivity, in agreement with a model proposed for a thermally cycled small elastic dipole.

Original languageAmerican English
Article number252903
JournalApplied Physics Letters
Volume95
Issue number25
DOIs
StatePublished - 2009

Bibliographical note

Funding Information:
This work was supported by the U.S.-Israel Binational Science Foundation through Grant No. 2006235.

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