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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    73 Citations (Scopus)

    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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