Lead-Free Relaxor-Like 0.75Bi0.5K0.5TiO3– 0.25BiFeO3 Ceramics with Large Electric Field-Induced Strain

Dense and phase-pure ferroelectric ceramics of 75 mol.% Bi0.5K0.5TiO3 - 25 mol.% BiFeO3 are prepared by the conventional solid state reaction method. Their crystal structure is analyzed and discussed. The dielectric and piezoelectric properties of the ceramics are investigated at various temperatures. The ceramics exhibit relaxor-like dielectric properties and high electric field-induced strain (equivalent to 250-300 pm/V at 25-75 degrees C), not previously reported for this composition, making it a promising lead-free alternative for actuator applications.


Published in:
Ferroelectrics, 439, 1, 88-94
Year:
2012
Publisher:
Abingdon, Taylor & Francis
ISSN:
0015-0193
Keywords:
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Note: The status of this file is: EPFL only


 Record created 2012-12-20, last modified 2018-03-17

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