Effect of Sintering Temperature on the Hysteresis Properties of Barium Titanate Ceramic

Wanwilai Chaisan

Abstract


In this work, barium titanate (BaTiO3 or BT) ceramic has been prepared by aconventional mixed oxide method with sintering temperature at 1250-1450 ºC. The sampleswere characterized the phase formation by using X-ray diffraction analysis (XRD), thedensity by using Archimedes method, the microstructure by scanning electron microscope(SEM) and the hysteresis properties by using modified Sawer-Tower circuit. The hysteresisparameters such as saturation polarization (Ps), remanent polarization (Pr) and coercive field(Ec) were measured as a function of sintering temperatures. The results show that thesaturation polarization (Ps) increases with increasing sintering temperature, whereas theremanent polarization (Pr) and the coercive field (Ec) decrease, a characteristic of theenhanced ferroelectric interaction for BT ceramic.

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