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Correlation between the chemical composition and the conduction mechanism of barium strontium titanate thin films

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Main Authors: Saif, Ala'eddin A., Prabakaran, Poopalan
Other Authors: alasaif82@hotmail.com
Format: Article
Language:English
Published: Elsevier B.V. 2011
Subjects:
Ceramics
Conduction mechanism
Dielectric response
Electrochemical impedance spectroscopy
Sol-gel processes
Thin films
Online Access:http://dspace.unimap.edu.my/xmlui/handle/123456789/13401
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spelling my.unimap-134012011-08-12T02:30:52Z Correlation between the chemical composition and the conduction mechanism of barium strontium titanate thin films Saif, Ala'eddin A. Prabakaran, Poopalan alasaif82@hotmail.com Ceramics Conduction mechanism Dielectric response Electrochemical impedance spectroscopy Sol-gel processes Thin films Link to publisher's homepage at http://www.elsevier.com/ Sol-gel barium strontium titanate thin films with different barium-to-strontium (Ba:Sr) values have been fabricated as MFM configurations. The Perovskite phase for the films is confirmed via XRD. In order to correlate the effect of the chemical composition of the films with the conduction mechanism, different AC electrical parameters have been addressed. The results show that the impedance and dielectric constant decrease as Ba content in the film increases, whereas the conductivity shows the opposite variation; this is attributed to the grain size and dipole dynamics. Complex impedance (Z*) and electric modulus (M*) planes show three overlapping regions as the response for the bulk, the grain boundaries and the film/electrode interface mechanisms. These mechanisms have been represented by an equivalent circuit. The imaginary component of electric modulus (M″) versus frequency plots, which reveal relaxation peaks that are not observed in the dielectric loss (ε″) plots, and it is found that these peaks are of a non-Debye-type. Furthermore, the frequency dependent conductivity plot shows three regions of conduction processes. 2011-08-07T07:58:44Z 2011-08-07T07:58:44Z 2011-06-30 Article Journal of Alloys and Compounds, vol. 509(26), 2011, pages 7210-7215 0925-8388 http://www.sciencedirect.com/science/article/pii/S0925838811009054 http://hdl.handle.net/123456789/13401 en Elsevier B.V.
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Ceramics
Conduction mechanism
Dielectric response
Electrochemical impedance spectroscopy
Sol-gel processes
Thin films
spellingShingle Ceramics
Conduction mechanism
Dielectric response
Electrochemical impedance spectroscopy
Sol-gel processes
Thin films
Saif, Ala'eddin A.
Prabakaran, Poopalan
Correlation between the chemical composition and the conduction mechanism of barium strontium titanate thin films
description Link to publisher's homepage at http://www.elsevier.com/
author2 alasaif82@hotmail.com
author_facet alasaif82@hotmail.com
Saif, Ala'eddin A.
Prabakaran, Poopalan
format Article
author Saif, Ala'eddin A.
Prabakaran, Poopalan
author_sort Saif, Ala'eddin A.
title Correlation between the chemical composition and the conduction mechanism of barium strontium titanate thin films
title_short Correlation between the chemical composition and the conduction mechanism of barium strontium titanate thin films
title_full Correlation between the chemical composition and the conduction mechanism of barium strontium titanate thin films
title_fullStr Correlation between the chemical composition and the conduction mechanism of barium strontium titanate thin films
title_full_unstemmed Correlation between the chemical composition and the conduction mechanism of barium strontium titanate thin films
title_sort correlation between the chemical composition and the conduction mechanism of barium strontium titanate thin films
publisher Elsevier B.V.
publishDate 2011
url http://dspace.unimap.edu.my/xmlui/handle/123456789/13401
_version_ 1643790844942090240
score 13.214268

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