Thermal and Frequency Stability of Dielectric Ceramic Ba6-3xNd8+2xTi18O54 (X=0.15, 0.25)

Chian Heng Lee *

Department of Physics, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia

Jumiah Hassan

Department of Physics, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia and Institute of Advanced Technology, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia

Mansor Hashim

Institute of Advanced Technology, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia

Raba’ah Syahidah Aziz

Department of Physics, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia and Institute of Advanced Technology, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia

Norlaily Mohd Saiden

Department of Physics, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia

*Author to whom correspondence should be addressed.


Abstract

A new dielectric material, barium neodymium titanate (BNT) ceramic can provide good thermal and frequency stability on the dielectric properties. The synthesis of BNT ceramics with x=0.15 and 0.25 was carried out using wet solid state method. The ceramics were characterized by X-ray diffraction to identify the phase. The shifting of XRD peaks revealed higher content of neodymium ions inside the compound. Surface morphology of the ceramics was determined using FESEM. Different compositions influenced the grain growth of the ceramics. BNT ceramics with higher neodymium content showed higher porosity, and higher resistance to shrinkage. The dielectric properties at low frequency from 40 Hz to 1 MHz were measured using Impedance Analyzer. The polarization effect inside the material was discussed and compared. BNT ceramics with x=0.15 has higher dielectric constant. These BNT ceramics showed frequency and thermal stability with respect to the dielectric constant.

 

Keywords: Dielectric properties, microstructure, polarization, thermal stability


How to Cite

Heng Lee, Chian, Jumiah Hassan, Mansor Hashim, Raba’ah Syahidah Aziz, and Norlaily Mohd Saiden. 2014. “Thermal and Frequency Stability of Dielectric Ceramic Ba6-3xNd8+2xTi18O54 (X=0.15, 0.25)”. Physical Science International Journal 4 (10):1318-25. https://doi.org/10.9734/PSIJ/2014/12908.

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