Abrupt change in domain switching behavior within tetragonal phase regime of (x)Na1/2Bi1/2TiO3-(1 − x)K1/2Bi1/2TiO3

We show that the lead-free piezoelectric system (x)Na1/2Bi1/2TiO3-(1 − x)K1/2Bi1/2TiO3 [xNBT-(1 − x)KBT] exhibits a boundary within its tetragonal phase regime at 0.58 < x < 0.60 across which the system exhibits an abrupt increase in reversible domain switching and high-field electrostrain for...

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Bibliographic Details
Published inJournal of applied physics Vol. 128; no. 20
Main Authors Adhikary, Gobinda Das, Ranjan, Rajeev
Format Journal Article
LanguageEnglish
Published Melville American Institute of Physics 28.11.2020
Subjects
Applied physics
Domains
Lead free
Phase transitions
Piezoelectricity
Switching
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Summary:We show that the lead-free piezoelectric system (x)Na1/2Bi1/2TiO3-(1 − x)K1/2Bi1/2TiO3 [xNBT-(1 − x)KBT] exhibits a boundary within its tetragonal phase regime at 0.58 < x < 0.60 across which the system exhibits an abrupt increase in reversible domain switching and high-field electrostrain for x > 0.58. We demonstrate that the abrupt changes, mimicking a composition-driven phase transition like scenario, are due to a sudden increase in the structural disorder for x > 0.58.
ISSN:0021-8979
1089-7550
DOI:10.1063/5.0030195