The influence of dopants commonly used in SnO2 varistor ceramics, such as CoO, Cr2O3 or Nb2O5, on the structural properties of SnO2 was investigated. Several SnO2-based ceramics containing only one of the dopants were prepared and characterized. Spectroscopic investigations [visible, near infrared (IR) and IR region] were performed to obtain information about dopants valence states inside the ceramics, as well as about their influence on electronic structure of the material. Structural properties were investigated by X-ray diffraction analysis and mechanisms of dopant incorporation were proposed. Obtained results were confirmed with results of the electrical measurements. Microstructural changes in doped ceramics were investigated by scanning electron microscopy (SEM) analysis that showed great differences in densities, grain size, and morphology of the SnO2 ceramics depending on type of dopants and their distribution.
Keywords:
scanning electron microscopy (SEM) / infrared (IR) spectroscopy / energy dispersive X-ray analysis (EDS) / ceramics
TY - JOUR
AU - Branković, Goran
AU - Branković, Zorica
AU - Davolos, MR
AU - Cilense, Mario
AU - Varela, JA
PY - 2004
UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/98
AB - The influence of dopants commonly used in SnO2 varistor ceramics, such as CoO, Cr2O3 or Nb2O5, on the structural properties of SnO2 was investigated. Several SnO2-based ceramics containing only one of the dopants were prepared and characterized. Spectroscopic investigations [visible, near infrared (IR) and IR region] were performed to obtain information about dopants valence states inside the ceramics, as well as about their influence on electronic structure of the material. Structural properties were investigated by X-ray diffraction analysis and mechanisms of dopant incorporation were proposed. Obtained results were confirmed with results of the electrical measurements. Microstructural changes in doped ceramics were investigated by scanning electron microscopy (SEM) analysis that showed great differences in densities, grain size, and morphology of the SnO2 ceramics depending on type of dopants and their distribution.
PB - Elsevier Science Inc, New York
T2 - Materials Characterization
T1 - Influence of the common varistor dopants (CoO, Cr2O3 and Nb2O5) on the structural properties of SnO2 ceramics
EP - 251
IS - 4-5
SP - 243
VL - 52
DO - 10.1016/j.matchar.2002.11.001
ER -
@article{
author = "Branković, Goran and Branković, Zorica and Davolos, MR and Cilense, Mario and Varela, JA",
year = "2004",
abstract = "The influence of dopants commonly used in SnO2 varistor ceramics, such as CoO, Cr2O3 or Nb2O5, on the structural properties of SnO2 was investigated. Several SnO2-based ceramics containing only one of the dopants were prepared and characterized. Spectroscopic investigations [visible, near infrared (IR) and IR region] were performed to obtain information about dopants valence states inside the ceramics, as well as about their influence on electronic structure of the material. Structural properties were investigated by X-ray diffraction analysis and mechanisms of dopant incorporation were proposed. Obtained results were confirmed with results of the electrical measurements. Microstructural changes in doped ceramics were investigated by scanning electron microscopy (SEM) analysis that showed great differences in densities, grain size, and morphology of the SnO2 ceramics depending on type of dopants and their distribution.",
publisher = "Elsevier Science Inc, New York",
journal = "Materials Characterization",
title = "Influence of the common varistor dopants (CoO, Cr2O3 and Nb2O5) on the structural properties of SnO2 ceramics",
pages = "251-243",
number = "4-5",
volume = "52",
doi = "10.1016/j.matchar.2002.11.001"
}
Branković, G., Branković, Z., Davolos, M., Cilense, M.,& Varela, J.. (2004). Influence of the common varistor dopants (CoO, Cr2O3 and Nb2O5) on the structural properties of SnO2 ceramics. in Materials Characterization
Elsevier Science Inc, New York., 52(4-5), 243-251.
https://doi.org/10.1016/j.matchar.2002.11.001
Branković G, Branković Z, Davolos M, Cilense M, Varela J. Influence of the common varistor dopants (CoO, Cr2O3 and Nb2O5) on the structural properties of SnO2 ceramics. in Materials Characterization. 2004;52(4-5):243-251.
doi:10.1016/j.matchar.2002.11.001 .
Branković, Goran, Branković, Zorica, Davolos, MR, Cilense, Mario, Varela, JA, "Influence of the common varistor dopants (CoO, Cr2O3 and Nb2O5) on the structural properties of SnO2 ceramics" in Materials Characterization, 52, no. 4-5 (2004):243-251,
https://doi.org/10.1016/j.matchar.2002.11.001 . .
