Dielectric Properties of Barium Titanate Ceramics Prepared from Powders Produced by Wet Chemical Routes
Samart Kongtaweelert [a] and Sukon Phanichphant* [b]* Author for corresponding; e-mail address: psukon@yahoo.com
Volume: Vol.32 No.1 (JANUARY 2005)
Research Article
DOI:
Received: 30 August 2004, Revised: -, Accepted: 5 January 2005, Published: -
Citation: Kongtaweelert S. and Phanichphant S., Dielectric Properties of Barium Titanate Ceramics Prepared from Powders Produced by Wet Chemical Routes, Chiang Mai Journal of Science, 2005; 32(1): 45-52.
Abstract
Barium titanate powders produced from wet chemical routes such as Catecholate, nitrate and sol-gel were pressed into pellets and sintered at 1,3500C for 3 hours to high density. Using a combination of room temperature X-ray diffraction (XRD) and scanning electron microscopy (SEM), the effect of sintering temperature on the phase assemblage and microstructure of barium titanate ceramics were examined. It can be seen that the grain size increases with increasing sintering temperature. The dielectric properties of the ceramics were investigated by fixed frequency measurements of dielectric constant and dielectric loss as a function of temperature.