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Anomalous piezoelectric response due to stabilization of two ferroelectric phases in Zr-modified BaTiO3

Kalyani, Ajay Kumar and Ranjan, Rajeev (2013) Anomalous piezoelectric response due to stabilization of two ferroelectric phases in Zr-modified BaTiO3. In: Journal of Physics: Condensed Matter, 25 (36). 362203_1-362203_6.

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Official URL: http://dx.doi.org/10.1088/0953-8984/25/36/362203

Abstract

The lead-free Ba (Ti1-xZrx)O-3 ceramic has shown enhanced piezo-response (d(33)) in a narrow composition interval (0.01 <= x <= 0.03) exhibiting the coexistence of two ferroelectric phases. The system presents two electric-field-dependent-property regimes: (i) a low field regime (E < 1.7 kV mm(-1)) where d(33) is nearly independent of the poling field, and (ii) (E > 1.7 kV mm(-1)) for which d(33) drops sharply. X-ray diffraction studies revealed that the later phenomenon is related to field driven irreversible structural transformation, which tends to drive the system away from an equilibrium two phase state to a nearly single phase metastable state.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to IOP Publishing Ltd.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Depositing User: Francis Jayakanth
Date Deposited: 28 Oct 2013 06:40
Last Modified: 28 Oct 2013 06:40
URI: http://eprints.iisc.ac.in/id/eprint/47476

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