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

doi:10.1063/1.3490235

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

Research output: Contribution to journal › Article › peer-review

76 Citations (Scopus)

Abstract

High-energy synchrotron radiation has been used to demonstrate an electric-field-induced phase transformation in the ceramic xK _1/2Bi_1/2TiO₃ - (1-x)Na_1/2Bi _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 language	English
Article number	132909
Journal	Applied Physics Letters
Volume	97
Issue number	13
DOIs	https://doi.org/10.1063/1.3490235
Publication status	Published - Sept 27 2010

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Electric-field-induced phase switching in the lead free piezoelectric potassium sodium bismuth titanate",

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.",

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AU - Royles, A. J.

AU - Bell, A. J.

AU - Jephcoat, A. P.

AU - Kleppe, A. K.

AU - Milne, S. J.

AU - Comyn, T. P.

PY - 2010/9/27

Y1 - 2010/9/27

N2 - 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.

AB - 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.

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

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