<abstract xmlns="http://www.w3.org/1999/xhtml">Barium titanate (BaTiO3) thin films have been prepared using the spray pyrolysis method. The films were deposited onto a glass substrate at varying substrate temperature ranging from 250 to 350 °C with the interval of 50 °C. The structural, morphological, electrical and dielectric properties of the deposited films have been studied. The X-ray diffraction pattern confirmed the polycrystalline nature of the films with a cubic crystal structure. X-ray photoelectron spectroscopy (XPS) showed a good agreement of the thin films stoichiometry with BaTiO3. A presence of Ba, Ti and O in the BaTiO3 thin films was observed by energy dispersive X-ray analysis. The scanning electron microscopy (SEM) showed the heterogeneous distribution of cubical grains all over the substrate. The grain size decreased with an increase in substrate temperature. The dielectric constant and dielectric loss showed the dispersion behaviour as a function of frequency, measured in the frequency range of 20 Hz to 1 MHz. The AC conductivity (σac) measurement showed the linear nature of obtained films, which confirms conduction mechanism due to small polarons. Impedance spectroscopy has been used to study the electrical behaviour of BaTiO3 ferroelectric thin films. The ferroelectric hysteresis loop has been recorded at room temperature.</abstract>

Barium titanate (BaTiO3) thin films have been prepared using the spray pyrolysis method. The films were deposited onto a glass substrate at varying substrate temperature ranging from 250 to 350 °C with the interval of 50 °C. The structural, morphological, electrical and dielectric properties of the deposited films have been studied. The X-ray diffraction pattern confirmed the polycrystalline nature of the films with a cubic crystal structure. X-ray photoelectron spectroscopy (XPS) showed a good agreement of the thin films stoichiometry with BaTiO3. A presence of Ba, Ti and O in the BaTiO3 thin films was observed by energy dispersive X-ray analysis. The scanning electron microscopy (SEM) showed the heterogeneous distribution of cubical grains all over the substrate. The grain size decreased with an increase in substrate temperature. The dielectric constant and dielectric loss showed the dispersion behaviour as a function of frequency, measured in the frequency range of 20 Hz to 1 MHz. The AC conductivity (σac) measurement showed the linear nature of obtained films, which confirms conduction mechanism due to small polarons. Impedance spectroscopy has been used to study the electrical behaviour of BaTiO3 ferroelectric thin films. The ferroelectric hysteresis loop has been recorded at room temperature.

Structural and electrical properties of barium titanate (BaTiO3) thin films obtained by spray pyrolysis method

Materials Science-Poland

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Structural and electrical properties of barium titanate (BaTiO) thin films obtained by spray pyrolysis method

Barium titanate (BaTiO3) thin films have been prepared using the spray pyrolysis method. The films were deposited onto a glass substrate at varying substrate...

Structural and electrical properties of barium titanate (BaTiO₃) thin films obtained by spray pyrolysis method

Published Online: Jan 06, 2016

Page range: 852 - 861

Received: Mar 07, 2015

Accepted: Sep 07, 2015

DOI: https://doi.org/10.1515/msp-2015-0107

Keywords
BaTiO thin films, structural properties, dielectric properties

© 2015 S.S. Kumbhar et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Structural and electrical properties of barium titanate (BaTiO3) thin films obtained by spray pyrolysis method

Published Online: Jan 06, 2016

Page range: 852 - 861

Received: Mar 07, 2015

Accepted: Sep 07, 2015

DOI: https://doi.org/10.1515/msp-2015-0107

KeywordsBaTiO thin films, structural properties, dielectric properties

© 2015 S.S. Kumbhar et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Structural and electrical properties of barium titanate (BaTiO₃) thin films obtained by spray pyrolysis method

Keywords
BaTiO thin films, structural properties, dielectric properties