DSpace
 

EPrints@IIT Delhi >
Faculty Research Publicatons  >
Physics >

Please use this identifier to cite or link to this item: http://eprint.iitd.ac.in/handle/2074/1447

Full metadata record

DC FieldValueLanguage
dc.contributor.authorRoy, Somnath C-
dc.contributor.authorSharma, G L-
dc.contributor.authorBhatnagar, M C-
dc.contributor.authorManchanda, R-
dc.contributor.authorBalakrishnan, V R-
dc.contributor.authorSamanta, S B-
dc.date.accessioned2006-02-25T10:05:20Z-
dc.date.available2006-02-25T10:05:20Z-
dc.date.issued2004-
dc.identifier.citationApplied Surface Science, 236(1-4), 306-312en
dc.identifier.urihttp://eprint.iitd.ac.in/dspace/handle/2074/1447-
dc.description.abstractBa0.5Sr0.5TiO3 thin films have been deposited by sol–gel spin coating technique and effect of pH of the precursor sol on the electrical and optical properties has been investigated. Thin films of about 480 nm thickness were deposited on platinised silicon (Pt/TiN/SiO2/Si) and fused quartz substrates using precursor sols of pH 2.8 and 4.8. The pH of the precursor sol is found to have a pronounced effect on the surface morphology, electrical and optical properties of the deposited BST thin films. X-ray diffractograms and atomic force micrographs show increase in the grain size with the increase in pH of the precursor sol. The grain size was found to increase from about 80 nm to about 120 nm. The dielectric constant was also found to increase from 325 to 340 with increase in the pH of the precursor sol. The dielectric loss, however, changes slightly from 0.036 to 0.052. As a consequence the leakage current and interfacial charge densities also increase. The optical studies reveal that the band-gap decreases from 3.75 to 3.66 eV with increase in the pH.en
dc.format.extent567722 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoenen
dc.subjectSol–gelen
dc.subjectpHen
dc.subjectBa0.5Sr0.5TiO3 thin filmsen
dc.subjectAtomic force microscopyen
dc.titleEffect of pH on electrical and optical properties of sol–gel derived microcrystalline Ba0.5Sr0.5TiO3 thin filmsen
dc.typeArticleen
Appears in Collections:Physics

Files in This Item:

File Description SizeFormat
royeff2004.pdf554.42 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