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Erschienen in:
13.04.2018
Optimized electrical properties of (Bi1/2K1/2)TiO3- bi(Mn2/3Sb1/3)O3 lead-free ceramics in mixing phase region
Erschienen in: Journal of Electroceramics | Ausgabe 1-2/2019
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Abstract
A new lead-free (1-x)(Bi1/2K1/2)TiO3-xBi(Mn2/3Sb1/3)O3 (BKT-BMS) piezoelectric ceramics were prepared by conventional solid-state route. The experiments show that the addition of BMS induces the occurrence of a mixed tetragonal and pseudocubic phases, and the fraction of tetragonal to pseudocubic phases closes to 50:50 around the composition x = 0.015, at where the dielectric, ferroelectric and piezoelectric properties is optimized. It is highlighted that the Td for the composition x = 0.015 keeps at an adequately-high level around 205 °C. All these competitive properties of the composition x = 0.015 demonstrate the potential application for lead-free piezoelectric ceramics over a broad temperature range.