New powellite type oxides in Ca-R-Nb-Mo-O system (R=Y, La, Nd, Sm or Bi) - Their synthesis, structure and dielectric properties

dc.contributor.author	Raveendran Nair, K
dc.contributor.author	Prabhakar Rao, P
dc.contributor.author	Sameera, S
dc.contributor.author	Vinitha Mohan, S
dc.contributor.author	Chandran, M R
dc.contributor.author	Peter Koshy
dc.date.accessioned	2015-08-15T15:04:41Z
dc.date.available	2015-08-15T15:04:41Z
dc.date.issued	2008
dc.identifier.citation	Materials Letters 62(17-18):2868-2871;30 Jun 2008	en_US
dc.identifier.issn	0167-577X
dc.identifier.uri	http://ir.niist.res.in:8080/jspui/handle/123456789/1977
dc.description.abstract	New complex oxides having powellite (CaMoO4) type structure in the Ca-R-Nb-Mo-O system (R=Y, La, Nd, Sm or Bi) were prepared employing the method of solid state reaction between the component oxides at high temperature (1000-1100 degrees C). The new compounds, CaRNbMoO8 (R=Y, La, Nd, Sm, Bi) are colorless and electrical insulators. The dielectric constants (K at 1 MHz) of these compounds are in the range 14-33 and K shows very little variation in the temperature range 30-100 degrees C. Their temperature coefficient of dielectric constant (TCK) is negative, which varies from -21 to -220 ppm/°C.	en_US
dc.language.iso	en	en_US
dc.publisher	Elsevier	en_US
dc.subject	Dielectrics	en_US
dc.subject	Electroceramics	en_US
dc.subject	X-ray techniques	en_US
dc.subject	Powellite	en_US
dc.subject	Low-temperature coefficient dielectrics	en_US
dc.title	New powellite type oxides in Ca-R-Nb-Mo-O system (R=Y, La, Nd, Sm or Bi) - Their synthesis, structure and dielectric properties	en_US
dc.type	Article	en_US