Author(s) Binhayeeniyi, N.; Sukwisute, P.; Nawae, S.; Muensit, N.
Journal Materials (Basel)
Date Published 2020 Jan 09

In this study, we investigated the effect of zirconium content on lead-free barium zirconate titanate (BZT) (Ba(ZrTi)O, with = 0.00, 0.01, 0.03, 0.05, and 0.08), which was prepared by the sol-gel method. A single-phase perovskite BZT was obtained under calcination and sintering conditions at 1100 C and 1300 C. Ferroelectric measurements revealed that the Curie temperature of BaTiO was 399 K, and the transition temperature decreased with increasing zirconium content. At the Curie temperature, Ba(ZrTi)O with a dielectric constant of 19,600 showed the best performance in converting supplied mechanical vibration into electrical power. The experiments focused on piezoelectric activity at a low vibrating frequency, and the output power that dissipated from the BZT system at 15 Hz was 2.47 nW (30 MΩ). The prepared lead-free sol-gel BZT is promising for energy-harvesting applications considering that the normal frequencies of ambient vibration sources are less than 100 Hz.

DOI 10.3390/ma13020315
ISSN 1996-1944
Citation Materials (Basel). 2020;13(2).

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