High temperature dielectric properties of cubic bismuth zinc tantalate.

Citation

Khaw, Chwin Chieh and Tan, Kar Ban and Lee, C. K. (2009) High temperature dielectric properties of cubic bismuth zinc tantalate. Ceramics International, 35 (4). pp. 1473-1480. ISSN 0272-8842

Abstract

Electrical properties of the parent phase in the Bi2O3–ZnO–Ta2O5 ternary system, cubic Bi1.5ZnTa1.5O7 (α-BZT), P, are investigated using impedance spectroscopy. P has permittivity (ɛ′) of 58, dielectric loss (tan δ) of 0.0023 at 30 °C and 1 MHz; temperature coefficient of capacitance (TCC) of −156 ppm/°C in the range of 30–300 °C at 1 MHz. A high degree of dispersion in the permittivity at low frequencies (<1 kHz) and temperatures above 500 °C is apparent. Dielectric losses exhibit non-frequency dependence at low temperatures presenting an increase at temperatures above 500 °C. A decrease of the loss occurs with increasing frequency.

Download File

Preview

PDF (Abstract)
High temperature dielectric properties of cubic bismuth zinc tantalate.pdf
Download (185kB) | Preview

Additional Metadata

Item Type:	Article
Divisions:	Faculty of Science
DOI Number:	https://doi.org/10.1016/j.ceramint.2008.08.006
Publisher:	Elsevier Limited
Keywords:	Pyrochlore; Permittivity; Dielectric loss; Temperature coefficient of capacitance.
Depositing User:	Najwani Amir Sariffudin
Date Deposited:	02 May 2014 07:45
Last Modified:	28 Sep 2015 00:59
Altmetrics:	http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.ceramint.2008.08.006
URI:	http://psasir.upm.edu.my/id/eprint/15007
Statistic Details:	View Download Statistic

Actions (login required)

View Item