Acoustic emission during the ferroelectric transition Pm3{sup ¯}m to P4mm in BaTiO{sub 3} and the ferroelastic transition R3{sup ¯}m-C2/c in Pb{sub 3}(PO{sub 4}){sub 2}

Journal Article · Mon Apr 13 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4918746· OSTI ID:22398904

Salje, E. K. H. ^[1]; Dul'kin, E.; Roth, M. ^[2]

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1. Department of Earth Sciences, University of Cambridge, Cambridge CB2 3EQ (United Kingdom)
2. Department of Applied Physics, The Hebrew University of Jerusalem, Jerusalem 91904 (Israel)

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 BaTiO{sub 3} and ferroelastic Pb{sub 3}(PO{sub 4}){sub 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.

• OSTI ID: 22398904
• Journal Information: Applied Physics Letters, Vol. 106, Issue 15; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ACOUSTICS
BARIUM COMPOUNDS
CUBIC LATTICES
EMISSION SPECTROSCOPY
FERROELECTRIC MATERIALS
LEAD PHOSPHATES
MONOCLINIC LATTICES
PHASE TRANSFORMATIONS
STATISTICS
STRAINS
STRESSES
TETRAGONAL LATTICES
THERMODYNAMICS
TITANATES
TRANSITION TEMPERATURE