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Electrical properties of barium titanate stannate functionally graded materials

Authorized Users Only
2010
Authors
Marković, Smilja
Jovalekić, Čedomir
Veselinović, Ljiljana
Mentus, Slavko
Uskoković, Dragan
Article (Published version)
Metadata
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Abstract
Barium titanate stannate (BTS) functionally graded materials (FGMs) with different tin/titanium concentration gradient were prepared by the powder-stacking method and uniaxially pressing process, followed by sintering. Impedance spectroscopy (IS) was used to determine the electrical characteristics of FGMs and ingredient BTS ceramics, as well as to distinguish the grain-interior and grain boundary resistivity of the ceramics. Activation energies of FGMs and ingredients were calculated. It has been established that for BTS ceramics the activation energy deduced from grain-interior conductivity (0.73-0.75 eV) is defined by chemical composition, while activation energy for grain boundary conductivity (1.07-1.25 eV) is influenced by microstructural development (density and average grain size). Furthermore, for FGMs, activation energy for grain-interior conductivity kept the intrinsic properties (0.74-0.78 eV) and did not depend on tin/titanium concentration gradient, while activation energ...y (1.03-1.29 eV) for grain boundary was determined by the microstructural gradient. No point dissipation was observed by IS, accordingly, no insulator interfaces (cracks and/or delamination) between graded layers were detected. © 2009 Elsevier Ltd. All rights reserved.

Keywords:
BaTiO3 / grain boundary / sintering / electrical properties / functionally graded materials
Source:
Journal of the European Ceramic Society, 2010, 30, 6, 1427-1435
Publisher:
  • Elsevier
Funding / projects:
  • Sinteza funkcionalnih materijala sa kontrolisanom strukturom na molekularnom i nano nivou (RS-142006)

DOI: 10.1016/j.jeurceramsoc.2009.10.020

ISSN: 0955-2219

WoS: 000275635000025

Scopus: 2-s2.0-75849140816
[ Google Scholar ]
20
16
Handle
https://hdl.handle.net/21.15107/rcub_dais_3425
URI
https://dais.sanu.ac.rs/123456789/3425
Collections
  • ИТН САНУ - Општа колекција / ITS SASA - General collection
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASA
TY  - JOUR
AU  - Marković, Smilja
AU  - Jovalekić, Čedomir
AU  - Veselinović, Ljiljana
AU  - Mentus, Slavko
AU  - Uskoković, Dragan
PY  - 2010
UR  - https://dais.sanu.ac.rs/123456789/3425
AB  - Barium titanate stannate (BTS) functionally graded materials (FGMs) with different tin/titanium concentration gradient were prepared by the powder-stacking method and uniaxially pressing process, followed by sintering. Impedance spectroscopy (IS) was used to determine the electrical characteristics of FGMs and ingredient BTS ceramics, as well as to distinguish the grain-interior and grain boundary resistivity of the ceramics. Activation energies of FGMs and ingredients were calculated. It has been established that for BTS ceramics the activation energy deduced from grain-interior conductivity (0.73-0.75 eV) is defined by chemical composition, while activation energy for grain boundary conductivity (1.07-1.25 eV) is influenced by microstructural development (density and average grain size). Furthermore, for FGMs, activation energy for grain-interior conductivity kept the intrinsic properties (0.74-0.78 eV) and did not depend on tin/titanium concentration gradient, while activation energy (1.03-1.29 eV) for grain boundary was determined by the microstructural gradient. No point dissipation was observed by IS, accordingly, no insulator interfaces (cracks and/or delamination) between graded layers were detected. © 2009 Elsevier Ltd. All rights reserved.
PB  - Elsevier
T2  - Journal of the European Ceramic Society
T1  - Electrical properties of barium titanate stannate functionally graded materials
SP  - 1427
EP  - 1435
VL  - 30
IS  - 6
DO  - 10.1016/j.jeurceramsoc.2009.10.020
UR  - https://hdl.handle.net/21.15107/rcub_dais_3425
ER  - 
@article{
author = "Marković, Smilja and Jovalekić, Čedomir and Veselinović, Ljiljana and Mentus, Slavko and Uskoković, Dragan",
year = "2010",
abstract = "Barium titanate stannate (BTS) functionally graded materials (FGMs) with different tin/titanium concentration gradient were prepared by the powder-stacking method and uniaxially pressing process, followed by sintering. Impedance spectroscopy (IS) was used to determine the electrical characteristics of FGMs and ingredient BTS ceramics, as well as to distinguish the grain-interior and grain boundary resistivity of the ceramics. Activation energies of FGMs and ingredients were calculated. It has been established that for BTS ceramics the activation energy deduced from grain-interior conductivity (0.73-0.75 eV) is defined by chemical composition, while activation energy for grain boundary conductivity (1.07-1.25 eV) is influenced by microstructural development (density and average grain size). Furthermore, for FGMs, activation energy for grain-interior conductivity kept the intrinsic properties (0.74-0.78 eV) and did not depend on tin/titanium concentration gradient, while activation energy (1.03-1.29 eV) for grain boundary was determined by the microstructural gradient. No point dissipation was observed by IS, accordingly, no insulator interfaces (cracks and/or delamination) between graded layers were detected. © 2009 Elsevier Ltd. All rights reserved.",
publisher = "Elsevier",
journal = "Journal of the European Ceramic Society",
title = "Electrical properties of barium titanate stannate functionally graded materials",
pages = "1427-1435",
volume = "30",
number = "6",
doi = "10.1016/j.jeurceramsoc.2009.10.020",
url = "https://hdl.handle.net/21.15107/rcub_dais_3425"
}
Marković, S., Jovalekić, Č., Veselinović, L., Mentus, S.,& Uskoković, D.. (2010). Electrical properties of barium titanate stannate functionally graded materials. in Journal of the European Ceramic Society
Elsevier., 30(6), 1427-1435.
https://doi.org/10.1016/j.jeurceramsoc.2009.10.020
https://hdl.handle.net/21.15107/rcub_dais_3425
Marković S, Jovalekić Č, Veselinović L, Mentus S, Uskoković D. Electrical properties of barium titanate stannate functionally graded materials. in Journal of the European Ceramic Society. 2010;30(6):1427-1435.
doi:10.1016/j.jeurceramsoc.2009.10.020
https://hdl.handle.net/21.15107/rcub_dais_3425 .
Marković, Smilja, Jovalekić, Čedomir, Veselinović, Ljiljana, Mentus, Slavko, Uskoković, Dragan, "Electrical properties of barium titanate stannate functionally graded materials" in Journal of the European Ceramic Society, 30, no. 6 (2010):1427-1435,
https://doi.org/10.1016/j.jeurceramsoc.2009.10.020 .,
https://hdl.handle.net/21.15107/rcub_dais_3425 .

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