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Nonlinear properties and stability of SnO2 varistors prepared by evaporation and decomposition of suspensions

Authorized Users Only
2005
Authors
Branković, Goran
Branković, Zorica
Varela, JA
Article (Published version)
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Abstract
SnO2 varistors doped with CoO, Cr2O3 and Nb2O5 were prepared by evaporation and decomposition of suspensions. The composition of the varistors was optimized to improve electrical properties, such as nonlinearity, leakage current and electrical stability. The best results were achieved with the following composition: 99.15% SnO2 +0.75% CoO+0.05% Cr2O3 +0.05% Nb2O5. Samples showed high density, reaching 99.5% of the theoretical density, as well as an homogeneous microstructure. The nonlinear coefficient was higher than 30 in the current range from 10(-7) to 10(-2) A/cm(2). The leakage current was 0.86 mu A/cm(2). These samples showed high stability of electrical parameters when they were exposed to high current of 27 mA/cm(2) for different time periods up to 30 min.
Keywords:
varistor / electrical properties
Source:
Journal of the European Ceramic Society, 2005, 25, 12, 3011-3015
Publisher:
  • Elsevier Sci Ltd, Oxford

DOI: 10.1016/j.jeurceramsoc.2005.04.001

ISSN: 0955-2219

WoS: 000230569300213

Scopus: 2-s2.0-20444483256
[ Google Scholar ]
12
11
URI
http://rimsi.imsi.bg.ac.rs/handle/123456789/116
Collections
  • Radovi istraživača / Researchers’ publications
Institution/Community
Institut za multidisciplinarna istraživanja
TY  - JOUR
AU  - Branković, Goran
AU  - Branković, Zorica
AU  - Varela, JA
PY  - 2005
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/116
AB  - SnO2 varistors doped with CoO, Cr2O3 and Nb2O5 were prepared by evaporation and decomposition of suspensions. The composition of the varistors was optimized to improve electrical properties, such as nonlinearity, leakage current and electrical stability. The best results were achieved with the following composition: 99.15% SnO2 +0.75% CoO+0.05% Cr2O3 +0.05% Nb2O5. Samples showed high density, reaching 99.5% of the theoretical density, as well as an homogeneous microstructure. The nonlinear coefficient was higher than 30 in the current range from 10(-7) to 10(-2) A/cm(2). The leakage current was 0.86 mu A/cm(2). These samples showed high stability of electrical parameters when they were exposed to high current of 27 mA/cm(2) for different time periods up to 30 min.
PB  - Elsevier Sci Ltd, Oxford
T2  - Journal of the European Ceramic Society
T1  - Nonlinear properties and stability of SnO2 varistors prepared by evaporation and decomposition of suspensions
EP  - 3015
IS  - 12
SP  - 3011
VL  - 25
DO  - 10.1016/j.jeurceramsoc.2005.04.001
ER  - 
@article{
author = "Branković, Goran and Branković, Zorica and Varela, JA",
year = "2005",
abstract = "SnO2 varistors doped with CoO, Cr2O3 and Nb2O5 were prepared by evaporation and decomposition of suspensions. The composition of the varistors was optimized to improve electrical properties, such as nonlinearity, leakage current and electrical stability. The best results were achieved with the following composition: 99.15% SnO2 +0.75% CoO+0.05% Cr2O3 +0.05% Nb2O5. Samples showed high density, reaching 99.5% of the theoretical density, as well as an homogeneous microstructure. The nonlinear coefficient was higher than 30 in the current range from 10(-7) to 10(-2) A/cm(2). The leakage current was 0.86 mu A/cm(2). These samples showed high stability of electrical parameters when they were exposed to high current of 27 mA/cm(2) for different time periods up to 30 min.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Journal of the European Ceramic Society",
title = "Nonlinear properties and stability of SnO2 varistors prepared by evaporation and decomposition of suspensions",
pages = "3015-3011",
number = "12",
volume = "25",
doi = "10.1016/j.jeurceramsoc.2005.04.001"
}
Branković, G., Branković, Z.,& Varela, J.. (2005). Nonlinear properties and stability of SnO2 varistors prepared by evaporation and decomposition of suspensions. in Journal of the European Ceramic Society
Elsevier Sci Ltd, Oxford., 25(12), 3011-3015.
https://doi.org/10.1016/j.jeurceramsoc.2005.04.001
Branković G, Branković Z, Varela J. Nonlinear properties and stability of SnO2 varistors prepared by evaporation and decomposition of suspensions. in Journal of the European Ceramic Society. 2005;25(12):3011-3015.
doi:10.1016/j.jeurceramsoc.2005.04.001 .
Branković, Goran, Branković, Zorica, Varela, JA, "Nonlinear properties and stability of SnO2 varistors prepared by evaporation and decomposition of suspensions" in Journal of the European Ceramic Society, 25, no. 12 (2005):3011-3015,
https://doi.org/10.1016/j.jeurceramsoc.2005.04.001 . .

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