Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/729
Title: Structural, spectroscopic and microwave characterizations of (Sm0.5Y0.5) Ti (Nb1-x Ta (x) )O-6 ceramics
Authors: James, T J
Shyla, J
Annamma, J
Thomas, J K
Prasad, V S
Sam Solomon
Keywords: Dielectric-properties
Resonators
Issue Date: 2011
Publisher: Springer
Citation: Journal of Materials Science-Materials in Electronics 22(3):228-232;Mar 2011
Abstract: Microwave dielectric ceramics of the type (Sm0.5Y0.5)Ti(Nb1-x Ta (x) )O-6 were prepared for x = 0, 0.2, 0.4, 0.6, 0.8 and 1 through the conventional solid state ceramic route. The ball-milled compositions were calcined at 1,250 A degrees C. The cylindrical pellets were sintered at temperatures between 1,385 and 1,450 A degrees C. The densities were determined by Archimedes method. The structure was analyzed using X-ray diffraction method. The microwave dielectric properties of the polished pellets were measured using cavity resonator method. The morphological studies were done using Scanning Electron Microscopy and Transmission Electron Microscopy. The Raman spectra were recorded and analyzed to confirm the structural change. The photoluminescence spectra were also taken and the emission lines were identified. A correlation study was done among the measured properties and parameters. Most of the samples have high dielectric constant, high quality factor and low temperature coefficient of resonant frequency and hence suitable for microwave applications.
URI: http://ir.niist.res.in:8080/jspui/handle/123456789/729
ISSN: 0957-4522
Appears in Collections:2011

Files in This Item:
File Description SizeFormat 
2011_ 0041.pdf410.46 kBAdobe PDFView/Open


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