Abstract
The acoustic emission (AE) method is presented as a useful complementary tool for nondestructive characterization of selective relaxor ferroelectrics. Combined measurements of the dielectric permittivity and AE activity as a function of temperature and externally applied electric fields have been carried out using Pb(Mg 1/3Nb 2/3)O 3–33%PbTiO 3 (PMN-0.33PT) single crystals and Pb(Sc 0.5Ta 0.5)O 3 (PST) single crystals. Anomalous behavior in the electric field dependencies of the characteristic temperatures, T m (diffuse permittivity maximum in PMN-PT) and T n (formation of incommensurate antiferroelectric domains in PST), and the associated AE intensities has been observed. Both T m and T n exhibit minima coinciding with the AE activities maxima at critical values of the applied dc electric fields, 0.5 and 0.13 kV respectively. These phenomena are discussed mainly in terms of the interaction of the external field with the random electric fields originating from the polar nanoregions in relaxor ferroelectrics.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
