Acoustic emission during the ferroelectric transition Pm 3 ¯ m to P4mm in BaTiO3 and the ferroelastic transition R 3 ¯ m-C2/c in Pb3(PO4)2

E. K.H. Salje*, E. Dul'kin, M. Roth

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

Acoustic emission (AE) spectroscopy without frequency filtering (∼broadband AE) and moderate time integration is shown to be sensitive enough to allow the investigation of subtle nano-structural changes in ferroelectric BaTiO3 and ferroelastic Pb3(PO4)2. AE signals during weak phase transitions are compatible with avalanche statistics as observed previously in large-strain systems. While the data are too sparse to determine avalanche exponents, they are well suited to determine other thermodynamic parameters such as transition temperatures and critical stresses.

Original languageEnglish
Article number152903
JournalApplied Physics Letters
Volume106
Issue number15
DOIs
StatePublished - 13 Apr 2015

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