Electric-field-induced phase switching in the lead free piezoelectric potassium sodium bismuth titanate

A. J. Royles, A. J. Bell, A. P. Jephcoat, A. K. Kleppe, S. J. Milne, T. P. Comyn

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Abstract

High-energy synchrotron radiation has been used to demonstrate an electric-field-induced phase transformation in the ceramic xK 1/2Bi1/2TiO3 - (1-x)Na1/2Bi 1/2TiO3, x=0.2. Application of an electric field ≥2 kV mm-1 leads to a transformation from single phase rhombohedral to a mixture of tetragonal and rhombohedral phases. The texturing of the tetragonal phase increases with field strength. The electric-field-induced transformation suggests an excursion into the morphotropic phase boundary in this system. The compositions x=0.1 and 0.3 reveal rhombohedral and tetragonal symmetry, respectively, both before and after the application of an electric field.

Original languageEnglish
Article number132909
JournalApplied Physics Letters
Volume97
Issue number13
DOIs
Publication statusPublished - Sep 27 2010

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    Royles, A. J., Bell, A. J., Jephcoat, A. P., Kleppe, A. K., Milne, S. J., & Comyn, T. P. (2010). Electric-field-induced phase switching in the lead free piezoelectric potassium sodium bismuth titanate. Applied Physics Letters, 97(13), [132909]. https://doi.org/10.1063/1.3490235