Phase transition at a nanometer scale detected by acoustic emission within the cubic phase Pb(Zn1/3Nb2/3)O3-xPbTiO3 relaxor ferroelectrics

Michael Roth, Evgeny Mojaev, Evgeniy Dul'kin*, Pascale Gemeiner, Brahim Dkhil

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

98 Scopus citations

Abstract

Pb(Zn1/3Nb2/3)O3-xPbTiO3 (x=4.5%-12%) relaxor ferroelectric crystals have been studied by means of acoustic emission (AE) in the 400-540K temperature range. An anomalous AE activity independent of the ground state relaxor/morphotropic/ferroelectric crossover has been revealed at around 500K, and it is associated with the "waterfall" feature related to the existence of polar nanoregions (PNRs). The 500KAE anomaly is attributed to local martensitelike cubic-to-tetragonal ferroelectric transitions within the PNRs imbedded in a nonpolar (cubic) matrix.

Original languageAmerican English
Article number265701
JournalPhysical Review Letters
Volume98
Issue number26
DOIs
StatePublished - 27 Jun 2007

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