Preparation and dielectric properties of zinc and cadmium doped barium tantalates, Ba3Zn1?xCdxTa2O9

Ganguli, AK and Jayadevan, KP and Subbanna, GN and Varma, KBR (1995) Preparation and dielectric properties of zinc and cadmium doped barium tantalates, Ba3Zn1?xCdxTa2O9. In: Solid State Communications, 94 (1). pp. 13-16.

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Abstract

Members of the Ba2Zn1-xCdxTa2O9 (0 less than or equal to x less than or equal to 1) series have been synthesized by solid state reactions at 1473K. Powder x-ray diffraction studies show a cubic perovskite cell with a similar to 4.1 Angstrom which increases with increase in x. Electron diffraction studies show the presence of hexagonal ordered perovskite structure in addition to the cubic structure seen by x-rays, the x = 0.5 composition showing more ordered crystallites. These samples show high dielectric constants with a maximum (epsilon(r) = 30 at 1 kHz) for the x = 0.5 member. The dielectric loss increases with increase in x at all the frequencies under study.

Item Type:	Journal Article
Publication:	Solid State Communications
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Keywords:	A.insulators;C.crystal structure and symmetry;D.dielectric response
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	02 Jun 2011 08:44
Last Modified:	02 Jun 2011 08:44
URI:	http://eprints.iisc.ac.in/id/eprint/38150

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