Effect of KCl addition on the microstructural and dielectric properties of bismuth vanadate ceramics

Shantha, K and Philip, S and Varma, KBR (1997) Effect of KCl addition on the microstructural and dielectric properties of bismuth vanadate ceramics. In: Materials Chemistry and Physics, 48 (1). pp. 48-51.

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Abstract

Bismuth vanadate, Bi2VO5.5 (BiV), ceramics have been fabricated with various concentrations of potassium chloride (KCl). X-ray powder diffraction studies confirm that KCl, at higher concentrations, reacts with BiV and gives rise to Bi12V2O23 and KVO3 phases. The microstructural studies carried out, using scanning electron microscopy, reveal that the grain size of BiV ceramics increases with increase in KCl content as a consequence of segregation of molten KCl at the grain boundaries during sintering. The dielectric constant (epsilon(r)) as well as dielectric loss (tan delta) are found to decrease with increase in KCl concentration.

Item Type:	Journal Article
Publication:	Materials Chemistry and Physics
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Keywords:	Bismuth vanadate;microstructure;potassium chloride;dielectric constant.
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	02 Jun 2009 06:31
Last Modified:	19 Sep 2010 05:25
URI:	http://eprints.iisc.ac.in/id/eprint/18896

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