New family of dielectric materials in ca-y-ti-nb-o system having pyrochlore type structure

dc.contributor.author	Nair, K R
dc.contributor.author	Prabhakar Rao, P
dc.contributor.author	Anupama, V R
dc.contributor.author	Joseph, S K
dc.contributor.author	Chandran, M R
dc.contributor.author	Peter Koshy
dc.date.accessioned	2015-05-23T07:10:11Z
dc.date.available	2015-05-23T07:10:11Z
dc.date.issued	2007
dc.identifier.citation	Journal of the American Ceramic Society 90(11):3656-3659;Nov 2007	en_US
dc.identifier.issn	0002-7820
dc.identifier.uri	http://ir.niist.res.in:8080/jspui/handle/123456789/1839
dc.description.abstract	A new family of pyrochlore-type oxides in the Ca-Y-Ti-Nb-O system has been prepared by the conventional solid-state route. These compounds have a dielectric constant (K) in the range 27-92 and, further, the dielectric properties are found to be independent of frequency in the 100 Hz to 1 MHz range for all the compositions in the temperature range 30 degrees-100 degrees C. Their temperature coefficient of the dielectric constant is negative and in the range -80 to -612 ppm/degrees C. Rietveld analysis of the X-ray diffraction data establishes a cubic pyrochlore-type phase in the space group Fd3m (no. 227). A variation in the stoichiometry of the cations in the system does not change the pyrochlore-type structure.	en_US
dc.language.iso	en	en_US
dc.publisher	Blackwell Publishing	en_US
dc.subject	Ceramics	en_US
dc.title	New family of dielectric materials in ca-y-ti-nb-o system having pyrochlore type structure	en_US
dc.type	Article	en_US
niist.citation