Thermal Treatment Effect On Piezoelectric And Pyroelectric Properties Of BaTiO3 Ceramics

¹LSSC Department of Electrical Engineering, FST, Road Immouzer, Fes, Morocco

²LPTA, Physics Department, Faculty of Science DM, B.P.1796, Fes-Atlas Morocco

Adv. Mater. Lett., 2015, 6 (11), pp 999-1003

DOI: 10.5185/amlett.2015.5976

Publication Date (Web): Oct 26, 2015

Copyright © IAAM-VBRI Press

E-mail: elbasset.abdelhalim@gmail.com

Abstract

Structural, piezoelectric and pyroelectric characteristics of sol gel processed BaTiO₃ ceramics calcined at different temperatures (500, 600, 700, 800, 900 and 1000°C) and sintered at 1100°C for 8 hours were investigated. The effect of heat treatment (calcinations) on the piezoelectric coefficient (d₃₃) and the voltage constant (g₃₃) was shown to be similar to that on the mechanical quality factor (Q_m). The values of d₃₃, g₃₃ and Qm increase with increasing temperature and reach their maximum at 1000°C (d₃₃=79.16, g₃₃=28.01 and Q_m=199). The results revealed that the full width at half maximum (FWHM) of the bands B1and E(TO₃+ LO₂) has high value and is essential for obtaining BT ceramics having good properties.

Keywords

Structural characteristics, full width at half maximum (FWHM), piezoelectric parameters, pyroelectric.