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

DOI: 10.1063/1.3490235 DOI Help

Authors: A. J. Royles (University of Leeds) , A. J. Bell (University of Leeds) , A. P. Jephcoat (Diamond Light Source) , A. K. Kleppe (Diamond Light Source) , S. J. Milne (University of Leeds) , T. P. Comyn (University of Leeds)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Applied Physics Letters , VOL 97 (13) , PAGES 132909

State: Published (Approved)
Published: September 2010

Abstract: High-energy synchrotron radiation has been used to demonstrate an electric-field-induced phase transformation in the ceramic xK1/2Bi1/2TiO3-(1-x)Na1/2Bi1/2TiO3, x = 0.2. Application of an electric field >= kVmm^-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.

Journal Keywords: Piezoelectric fields; Electric fields; Piezoelectric materials; Sodium; Ceramics

Subject Areas: Materials

Instruments: I15-Extreme Conditions

Added On: 04/10/2010 13:27

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