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The structural, electrical and optical properties of spark plasma sintered BaSn1-xSbxO3 ceramics

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2020
Authors
Vukašinović, Jelena
Počuča-Nešić, Milica
Luković Golić, Danijela
Ribić, Vesna
Branković, Zorica
Savić, Slavica M.
Dapčević, Aleksandra
Bernik, Slavko
Podlogar, Matejka
Kocen, Matej
Rapljenović, Željko
Ivek, Tomislav
Lazović, Vladimir
Dojčinović, Biljana
Branković, Goran
Article (Published version)
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Abstract
Antimony doped barium-stannate dense ceramic materials were synthesized using spark plasma sintering technique out of mechanically activated precursor powders. The influence of various Sb concentrations (x =0.00 – 0.10) on properties of BaSn1-xSbxO3 ceramics was investigated. Relative densities of prepared samples were in the range of (79–96) %. TEM analysis revealed the presence of many dislocations in undoped BaSnO3, and their significant reduction upon doping with Sb. All samples except BaSn0.92Sb0.08O3 exhibit non-linear I-U characteristic, typical for semiconductors with potential barrier at grain boundaries. Low angle grain boundaries found only in BaSn0.92Sb0.08O3 caused the loss of potential barrier at grain boundaries which was confirmed by AC impedance spectroscopy measurements. Consequently, BaSn0.92Sb0.08O3 showed the lowest electrical resistivity and linear I-U characteristic. UV–vis analysis confirmed the increasing of band gap (Burstein–Moss shift) values in all doped sa...mples.

Keywords:
BaSnO3 / Spark plasma sintering / Potential barrier / Low angle grain boundaries / Electrical conductivity
Source:
Journal of the European Ceramic Society, 2020, 40, 15, 5566-5575
Publisher:
  • Elsevier
Projects:
  • Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200053 (University of Belgrade, Institute for Multidisciplinary Research) (RS-200053)
  • Slovenian Research Agency (Program Contract No. P2-0084).
  • Croatian Science Foundation project IP-2018-01-2730
  • The Serbia-Slovenia bilateral collaboration ("Zero-to Three-Dimensional Nanostructures for Application in Optics, Electronics and Energetics")
Note:
  • The peer-reviewed version: http://cer.ihtm.bg.ac.rs/handle/123456789/3629

DOI: 10.1016/j.jeurceramsoc.2020.06.062

ISSN: 0955-2219; 1873-619X

WoS: 000564251700002

Scopus: 2-s2.0-85087286901
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URI
http://cer.ihtm.bg.ac.rs/handle/123456789/3628
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