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The crystal structure, microstructure, and dielectric properties of BaTi1-xSnxO3 (x = 0,0.05 and 0.1) ceramics sintered in different atmospheres (air and Ar)

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2015
831.pdf (100.4Kb)
Authors
Garaj, Andrej
Cvjetićanin, Nikola
Marković, Smilja
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Abstract
Due to specific dielectric and ferroelectric properties, functional ceramics based on barium titanate (BaTiO3) have found application in semiconductor industries. Appropriate electrical properties of barium titanate-based materials, such as magnitude of relative dielectric permittivity and the Curie temperature, could be achieved by varying the sintering conditions (which influenced ceramics’ microstructure) and/or by doping with various cations. Here, we investigated an influence of sintering atmosphere (air and argon) on the crystal structure, microstructure, and dielectric properties of barium titanate-stannate (BTS; BaTi1-xSnxO3) ceramics. The BTS powders (with x = 0, 0.05 and 0.1; denoted BT, BTS5 and BTS 10, respectively) were synthesized by solid-state reaction technique. In the following, the powders were uniaxially pressed (P = 240 MPa) into cylindrical compacts (Ø6 mm and h approx. 2 mm) and sintered in SETSYS TMA (Setaram Instrumentation, Caluire, France) by heating rate of ...10 °/min up 1420 °C and with dwell time of 2 hours. To establish the influence of a sintering atmosphere two sets of experiments were performed: (1) in air, and (2) in Ar. During sintering, the shrinkage was recorded in axial (h) direction. The crystal structure of BTS ceramics were studied at room temperature by X-ray diffractometry and Raman spectroscopy. The microstructure and chemical (Ti/Sn) composition were examined by SEM–EDS methods. The electrical measurements were made in air, at 1 kHz using a Wayne Kerr Universal Bridge B224; the measurements were done in cooling, from 160 to 20 °C. A profound effect of argon atmosphere on the magnitude of relative dielectric permittivity of sintered BTS ceramics has been found.

Keywords:
barium titanate stannate / sintering / ferroelectric properties / dielectric properties
Source:
Program and the Book of Abstracts / Fourteenth Young Researchers' Conference Materials Sciences and Engineering, December 9-11, 2015, Belgrade, Serbia, 2015, 40-40
Publisher:
  • Belgrade : Institute of Technical Sciences of SASA
Funding / projects:
  • Molecular designing of nanoparticles with controlled morphological and physicochemical characteristics and functional materials based on them (RS-45004)
[ Google Scholar ]
Handle
https://hdl.handle.net/21.15107/rcub_dais_834
URI
https://dais.sanu.ac.rs/123456789/834
Collections
  • ИТН САНУ - Општа колекција / ITS SASA - General collection
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASA
TY  - CONF
AU  - Garaj, Andrej
AU  - Cvjetićanin, Nikola
AU  - Marković, Smilja
PY  - 2015
UR  - https://dais.sanu.ac.rs/123456789/834
AB  - Due to specific dielectric and ferroelectric properties, functional ceramics based on barium titanate (BaTiO3) have found application in semiconductor industries. Appropriate electrical properties of barium titanate-based materials, such as magnitude of relative dielectric permittivity and the Curie temperature, could be achieved by varying the sintering conditions (which influenced ceramics’ microstructure) and/or by doping with various cations. Here, we investigated an influence of sintering atmosphere (air and argon) on the crystal structure, microstructure, and dielectric properties of barium titanate-stannate (BTS; BaTi1-xSnxO3) ceramics. The BTS powders (with x = 0, 0.05 and 0.1; denoted BT, BTS5 and BTS 10, respectively) were synthesized by solid-state reaction technique. In the following, the powders were uniaxially pressed (P = 240 MPa) into cylindrical compacts (Ø6 mm and h approx. 2 mm) and sintered in SETSYS TMA (Setaram Instrumentation, Caluire, France) by heating rate of 10 °/min up 1420 °C and with dwell time of 2 hours. To establish the influence of a sintering atmosphere two sets of experiments were performed: (1) in air, and (2) in Ar. During sintering, the shrinkage was recorded in axial (h) direction. The crystal structure of BTS ceramics were studied at room temperature by X-ray diffractometry and Raman spectroscopy. The microstructure and chemical (Ti/Sn) composition were examined by SEM–EDS methods. The electrical measurements were made in air, at 1 kHz using a Wayne Kerr Universal Bridge B224; the measurements were done in cooling, from 160 to 20 °C. A profound effect of argon atmosphere on the magnitude of relative dielectric permittivity of sintered BTS ceramics has been found.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of Abstracts / Fourteenth Young Researchers' Conference Materials Sciences and Engineering, December 9-11, 2015, Belgrade, Serbia
T1  - The crystal structure, microstructure, and dielectric properties of BaTi1-xSnxO3 (x = 0,0.05 and 0.1) ceramics sintered in different atmospheres (air and Ar)
SP  - 40
EP  - 40
UR  - https://hdl.handle.net/21.15107/rcub_dais_834
ER  - 
@conference{
author = "Garaj, Andrej and Cvjetićanin, Nikola and Marković, Smilja",
year = "2015",
abstract = "Due to specific dielectric and ferroelectric properties, functional ceramics based on barium titanate (BaTiO3) have found application in semiconductor industries. Appropriate electrical properties of barium titanate-based materials, such as magnitude of relative dielectric permittivity and the Curie temperature, could be achieved by varying the sintering conditions (which influenced ceramics’ microstructure) and/or by doping with various cations. Here, we investigated an influence of sintering atmosphere (air and argon) on the crystal structure, microstructure, and dielectric properties of barium titanate-stannate (BTS; BaTi1-xSnxO3) ceramics. The BTS powders (with x = 0, 0.05 and 0.1; denoted BT, BTS5 and BTS 10, respectively) were synthesized by solid-state reaction technique. In the following, the powders were uniaxially pressed (P = 240 MPa) into cylindrical compacts (Ø6 mm and h approx. 2 mm) and sintered in SETSYS TMA (Setaram Instrumentation, Caluire, France) by heating rate of 10 °/min up 1420 °C and with dwell time of 2 hours. To establish the influence of a sintering atmosphere two sets of experiments were performed: (1) in air, and (2) in Ar. During sintering, the shrinkage was recorded in axial (h) direction. The crystal structure of BTS ceramics were studied at room temperature by X-ray diffractometry and Raman spectroscopy. The microstructure and chemical (Ti/Sn) composition were examined by SEM–EDS methods. The electrical measurements were made in air, at 1 kHz using a Wayne Kerr Universal Bridge B224; the measurements were done in cooling, from 160 to 20 °C. A profound effect of argon atmosphere on the magnitude of relative dielectric permittivity of sintered BTS ceramics has been found.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of Abstracts / Fourteenth Young Researchers' Conference Materials Sciences and Engineering, December 9-11, 2015, Belgrade, Serbia",
title = "The crystal structure, microstructure, and dielectric properties of BaTi1-xSnxO3 (x = 0,0.05 and 0.1) ceramics sintered in different atmospheres (air and Ar)",
pages = "40-40",
url = "https://hdl.handle.net/21.15107/rcub_dais_834"
}
Garaj, A., Cvjetićanin, N.,& Marković, S.. (2015). The crystal structure, microstructure, and dielectric properties of BaTi1-xSnxO3 (x = 0,0.05 and 0.1) ceramics sintered in different atmospheres (air and Ar). in Program and the Book of Abstracts / Fourteenth Young Researchers' Conference Materials Sciences and Engineering, December 9-11, 2015, Belgrade, Serbia
Belgrade : Institute of Technical Sciences of SASA., 40-40.
https://hdl.handle.net/21.15107/rcub_dais_834
Garaj A, Cvjetićanin N, Marković S. The crystal structure, microstructure, and dielectric properties of BaTi1-xSnxO3 (x = 0,0.05 and 0.1) ceramics sintered in different atmospheres (air and Ar). in Program and the Book of Abstracts / Fourteenth Young Researchers' Conference Materials Sciences and Engineering, December 9-11, 2015, Belgrade, Serbia. 2015;:40-40.
https://hdl.handle.net/21.15107/rcub_dais_834 .
Garaj, Andrej, Cvjetićanin, Nikola, Marković, Smilja, "The crystal structure, microstructure, and dielectric properties of BaTi1-xSnxO3 (x = 0,0.05 and 0.1) ceramics sintered in different atmospheres (air and Ar)" in Program and the Book of Abstracts / Fourteenth Young Researchers' Conference Materials Sciences and Engineering, December 9-11, 2015, Belgrade, Serbia (2015):40-40,
https://hdl.handle.net/21.15107/rcub_dais_834 .

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