A mixture of starting ZnO and SnO2 powders (molar ratio 2: 1) were mechanically activated for 10, 40, 80 and 160 min in a planetary ball mill and then isothermally sintered at 1300 degrees C for 2 h in order to obtain Zn2SnO4 ceramics. X-ray diffraction analysis confirmed single-phase polycrystals. Far infrared reflection spectra were measured (100-1400 cm(-1)). The same oscillators were observed, but the highest intensity of reflectivity peaks was obtained for the powder activated 10min and it gradually decreased with longer times of mechanical activation. This is in agreement with microstructure analvsis where longer times of mechanical activation lead to increased porosity and defects. Using group theory six ionic oscillators were calculated for single crystal Zn2SnO4 Spectra, but two more oscillators were observed in the obtained experimental spectra, which Could be the result of mechanical activation and sintering. The FIR experimental results were numerically analyzed and oscilla...tor parameters were calculated.
TY - JOUR
AU - Nikolić, Maria Vesna
AU - Ivetić, Tamara B.
AU - Paraskevopoulos, K.M.
AU - Zorbas, K. T.
AU - Blagojević, V.
AU - Vasiljević-Radović, Dana
PY - 2007
UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/195
AB - A mixture of starting ZnO and SnO2 powders (molar ratio 2: 1) were mechanically activated for 10, 40, 80 and 160 min in a planetary ball mill and then isothermally sintered at 1300 degrees C for 2 h in order to obtain Zn2SnO4 ceramics. X-ray diffraction analysis confirmed single-phase polycrystals. Far infrared reflection spectra were measured (100-1400 cm(-1)). The same oscillators were observed, but the highest intensity of reflectivity peaks was obtained for the powder activated 10min and it gradually decreased with longer times of mechanical activation. This is in agreement with microstructure analvsis where longer times of mechanical activation lead to increased porosity and defects. Using group theory six ionic oscillators were calculated for single crystal Zn2SnO4 Spectra, but two more oscillators were observed in the obtained experimental spectra, which Could be the result of mechanical activation and sintering. The FIR experimental results were numerically analyzed and oscillator parameters were calculated.
PB - Elsevier Sci Ltd, Oxford
T2 - Journal of the European Ceramic Society
T1 - Far infrared reflection spectroscopy of Zn2SnO4 ceramics obtained by sintering mechanically activated ZnO-SnO2 powder mixtures
EP - 3730
IS - 13-15
SP - 3727
VL - 27
DO - 10.1016/j.jeurceramsoc.2007.02.040
ER -
@article{
author = "Nikolić, Maria Vesna and Ivetić, Tamara B. and Paraskevopoulos, K.M. and Zorbas, K. T. and Blagojević, V. and Vasiljević-Radović, Dana",
year = "2007",
abstract = "A mixture of starting ZnO and SnO2 powders (molar ratio 2: 1) were mechanically activated for 10, 40, 80 and 160 min in a planetary ball mill and then isothermally sintered at 1300 degrees C for 2 h in order to obtain Zn2SnO4 ceramics. X-ray diffraction analysis confirmed single-phase polycrystals. Far infrared reflection spectra were measured (100-1400 cm(-1)). The same oscillators were observed, but the highest intensity of reflectivity peaks was obtained for the powder activated 10min and it gradually decreased with longer times of mechanical activation. This is in agreement with microstructure analvsis where longer times of mechanical activation lead to increased porosity and defects. Using group theory six ionic oscillators were calculated for single crystal Zn2SnO4 Spectra, but two more oscillators were observed in the obtained experimental spectra, which Could be the result of mechanical activation and sintering. The FIR experimental results were numerically analyzed and oscillator parameters were calculated.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Journal of the European Ceramic Society",
title = "Far infrared reflection spectroscopy of Zn2SnO4 ceramics obtained by sintering mechanically activated ZnO-SnO2 powder mixtures",
pages = "3730-3727",
number = "13-15",
volume = "27",
doi = "10.1016/j.jeurceramsoc.2007.02.040"
}
Nikolić, M. V., Ivetić, T. B., Paraskevopoulos, K.M., Zorbas, K. T., Blagojević, V.,& Vasiljević-Radović, D.. (2007). Far infrared reflection spectroscopy of Zn2SnO4 ceramics obtained by sintering mechanically activated ZnO-SnO2 powder mixtures. in Journal of the European Ceramic Society
Elsevier Sci Ltd, Oxford., 27(13-15), 3727-3730.
https://doi.org/10.1016/j.jeurceramsoc.2007.02.040
Nikolić MV, Ivetić TB, Paraskevopoulos K, Zorbas KT, Blagojević V, Vasiljević-Radović D. Far infrared reflection spectroscopy of Zn2SnO4 ceramics obtained by sintering mechanically activated ZnO-SnO2 powder mixtures. in Journal of the European Ceramic Society. 2007;27(13-15):3727-3730.
doi:10.1016/j.jeurceramsoc.2007.02.040 .
Nikolić, Maria Vesna, Ivetić, Tamara B., Paraskevopoulos, K.M., Zorbas, K. T., Blagojević, V., Vasiljević-Radović, Dana, "Far infrared reflection spectroscopy of Zn2SnO4 ceramics obtained by sintering mechanically activated ZnO-SnO2 powder mixtures" in Journal of the European Ceramic Society, 27, no. 13-15 (2007):3727-3730,
https://doi.org/10.1016/j.jeurceramsoc.2007.02.040 . .
