DSpace
 

EPrints@IIT Delhi >
Faculty Research Publicatons  >
Chemistry >

Please use this identifier to cite or link to this item: http://eprint.iitd.ac.in/handle/2074/853

Full metadata record

DC FieldValueLanguage
dc.contributor.authorThirumal, M-
dc.contributor.authorGanguli, A K-
dc.date.accessioned2005-09-17T11:07:06Z-
dc.date.available2005-09-17T11:07:06Z-
dc.date.issued2001-
dc.identifier.citationMaterials Research Bulletin, 36(13-14), 2421–2427en
dc.identifier.urihttp://eprint.iitd.ac.in/dspace/handle/2074/853-
dc.description.abstractMonophasic Oxides of the type MgNb2−xTaxO6 (0 ≤ x ≤ 2) have been synthesized by solid-state reactions using Mg(NO3)2·6H2O as the source of Mg. The oxides crystallize in the orthorhombic columbite structure till X = 1.75 and the tetragonal trirutile structure for pure MgTa2O6 (x = 2.0). Sintered pellets at 1200°C show dielectric constant varying between 16 to 28 for the entire range of composition at a frequency of 500 kHz. The dielectric loss is nearly constant with frequency, and varies between 0.004 and 0.01 for different compositions. The temperature coefficient of dielectric constant (τE) is 3 to −3 ppm/C (30 to 300°C). Scanning electron micrographs reveal a gradual decrease in grain size with increase in Ta concentration with size of 7 to 10 microns for the pure Nb phase sintered at 1200°C while the pure Ta phase shows a grain size of approximately 0.5 to 1 microns.en
dc.format.extent230141 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoenen
dc.subjectCeramicsen
dc.subjectElectronic materialsen
dc.subjectOxidesen
dc.titleSynthesis and dielectric properties of magnesium niobate -magnesium tantalate solid solutionsen
dc.typeArticleen
Appears in Collections:Chemistry

Files in This Item:

File Description SizeFormat
thirumalsyn2001.pdf224.75 kBAdobe PDFView/Open
View Statistics

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback