DSpace
 

DSpace at IIT Bombay >
IITB Publications >
Article >

Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/9913

Title: Structural and electrical properties of lead free ceramic: Ba(La(1/2)Nb(1/2))O(3)
Authors: PRASAD, K
NATH, KA
BHAGAT, S
PRIYANKA
CHANDRA, KP
KULKARNI, AR
Keywords: microwave dielectric-properties
complex perovskite ceramics
impedance spectroscopy
infrared reflectivity
relaxation
bafe0.5nb0.5o3
conductivity
behavior
system
tb
Issue Date: 2010
Publisher: MANEY PUBLISHING
Citation: ADVANCES IN APPLIED CERAMICS, 109(4), 225-233
Abstract: Lead free perovskite Ba(La(1/2)Nb(1/2))O(3) was prepared by conventional ceramic fabrication technique at 1375 degrees C for 7 h in air atmosphere. The crystal symmetry, space group and unit cell dimensions were estimated using Rietveld analysis. X-ray diffraction analysis indicated the formation of a single phase monoclinic structure with space group P2/m. Energy dispersive X-ray analysis and scanning electron microscopy studies were carried to study the quality and purity of the compound. Permittivity data showed low temperature coefficient of capacitance (T(CC)=11%) up to 100 degrees C. The circuit model fittings were carried out using the impedance data to find the correlation between the response of real system and idealised model electrical circuit. Complex impedance analyses suggested the dielectric relaxation to be of non-Debye type. The correlated barrier hopping model was employed to successfully explain the mechanism of charge transport in Ba(La(1/2)Nb(1/2))O(3). The AC conductivity data were used to evaluate the density of states at Fermi level, minimum hopping length and apparent activation energy.
URI: http://dx.doi.org/10.1179/174367509X12503626841677
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9913
http://hdl.handle.net/10054/9913
ISSN: 1743-6753
Appears in Collections:Article

Files in This Item:

There are no files associated with this item.

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