Relaxation dynamics associated with the multiple polymorphic phase transitions in morphotropic phase boundaries BiScO3-PbTiO3 solid solutions

High temperature electrical properties of morphotropic phase boundary BiScO3-PbTiO3 compositions, exhibiting high piezoelectric coefficient, saturation polarization, field induced strain and low dielectric loss have been presented in detail. Dielectric loss and various electrical parameters have been comprehensively utilized to identify multiple dipolar relaxation dynamics in the regime where conductivity effects are low. Dielectric data confirms presence of various polymorphs exhibiting lower (higher) symmetry configuration, which extends to wider (narrower) temperature regime. Effect of conductivity associated with the charge transport is not dominant up to 600 K, which shows that this material is a promising candidate for high temperature applications. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Automated summary

The high temperature electrical properties of morphotropic phase boundary BiScO3-PbTiO3 compositions, including high piezoelectric coefficient, saturation polarization, field induced strain, and low dielectric loss, were presented. The presence of various polymorphs with lower or higher symmetry configuration affecting a wider or narrower temperature regime was confirmed through dielectric data analysis. The conductivity effects associated with charge transport were found to be not dominant up to 600 K, indicating the material's potential for high temperature applications.