Nanocrystalline Zn2SnO4/SnO2: Crystal structure and humidity influence on complex impedance
Само за регистроване кориснике
2020
Аутори
Nikolić, Maria VesnaLabus, Nebojša J.
Pavlović, Vera P.
Marković, Smilja
Luković, Miloljub
Tadić, Nenad B.
Vujančević, Jelena
Vlahović, Branislav
Pavlović, Vladimir B
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Nanocrystalline Zn2SnO4/SnO2 powder was obtained by a solid state reaction of ZnO and SnO2 nanopowders mixed in the molar ratio 1:1. The phase composition of the obtained powder was studied by XRD and Raman spectroscopy, morphology and texture were characterized by FESEM, TEM, BET and Hg porosimetry, while XPS and FTIR spectroscopy were used to determine the surface chemistry. The influence of humidity on complex impedance was monitored on bulk samples in the relative humidity (RH) range 30-90% in a climatic chamber in the frequency range 42 Hz- 1 MHz at working temperatures of 25 and 50 degrees C. Change in RH had a significant influence on impedance reduction, especially noticeable in the lower frequency range, indicating potential application of this nanocomposite as a humidity sensing material. Increase in RH led to an increase in AC conductivity that changed with frequency according to the Jonscher power law. The frequency exponent decreased with increase in RH and sample temperat...ure indicating that the correlated hopping barrier model is the dominant conduction mechanism. Complex impedance was analyzed using an equivalent circuit consisting of a parallel resistance and constant phase element, showing the dominant influence of grain boundaries at both working temperatures (25 and 50 degrees C). The resistance decreased, while the capacitance and relaxation frequency increased with increase in RH. At high humidity an added Wartburg element enabled modeling of the charge diffusion process.
Кључне речи:
Zn2SnO4 / Solid-state reaction / SnO2 / Humidity / Crystal structure / Complex impedanceИзвор:
Journal of Electroceramics, 2020, 45, 4, 135-147Издавач:
- Springer, Dordrecht
Финансирање / пројекти:
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200053 (Универзитет у Београду, Институт за мултидисциплинарна истраживања) (RS-MESTD-inst-2020-200053)
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200175 (Институт техничких наука САНУ, Београд) (RS-MESTD-inst-2020-200175)
DOI: 10.1007/s10832-021-00232-z
ISSN: 1385-3449
WoS: 000616147700002
Scopus: 2-s2.0-85100799723
Институција/група
Institut za multidisciplinarna istraživanjaTY - JOUR AU - Nikolić, Maria Vesna AU - Labus, Nebojša J. AU - Pavlović, Vera P. AU - Marković, Smilja AU - Luković, Miloljub AU - Tadić, Nenad B. AU - Vujančević, Jelena AU - Vlahović, Branislav AU - Pavlović, Vladimir B PY - 2020 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/1364 AB - Nanocrystalline Zn2SnO4/SnO2 powder was obtained by a solid state reaction of ZnO and SnO2 nanopowders mixed in the molar ratio 1:1. The phase composition of the obtained powder was studied by XRD and Raman spectroscopy, morphology and texture were characterized by FESEM, TEM, BET and Hg porosimetry, while XPS and FTIR spectroscopy were used to determine the surface chemistry. The influence of humidity on complex impedance was monitored on bulk samples in the relative humidity (RH) range 30-90% in a climatic chamber in the frequency range 42 Hz- 1 MHz at working temperatures of 25 and 50 degrees C. Change in RH had a significant influence on impedance reduction, especially noticeable in the lower frequency range, indicating potential application of this nanocomposite as a humidity sensing material. Increase in RH led to an increase in AC conductivity that changed with frequency according to the Jonscher power law. The frequency exponent decreased with increase in RH and sample temperature indicating that the correlated hopping barrier model is the dominant conduction mechanism. Complex impedance was analyzed using an equivalent circuit consisting of a parallel resistance and constant phase element, showing the dominant influence of grain boundaries at both working temperatures (25 and 50 degrees C). The resistance decreased, while the capacitance and relaxation frequency increased with increase in RH. At high humidity an added Wartburg element enabled modeling of the charge diffusion process. PB - Springer, Dordrecht T2 - Journal of Electroceramics T1 - Nanocrystalline Zn2SnO4/SnO2: Crystal structure and humidity influence on complex impedance EP - 147 IS - 4 SP - 135 VL - 45 DO - 10.1007/s10832-021-00232-z ER -
@article{ author = "Nikolić, Maria Vesna and Labus, Nebojša J. and Pavlović, Vera P. and Marković, Smilja and Luković, Miloljub and Tadić, Nenad B. and Vujančević, Jelena and Vlahović, Branislav and Pavlović, Vladimir B", year = "2020", abstract = "Nanocrystalline Zn2SnO4/SnO2 powder was obtained by a solid state reaction of ZnO and SnO2 nanopowders mixed in the molar ratio 1:1. The phase composition of the obtained powder was studied by XRD and Raman spectroscopy, morphology and texture were characterized by FESEM, TEM, BET and Hg porosimetry, while XPS and FTIR spectroscopy were used to determine the surface chemistry. The influence of humidity on complex impedance was monitored on bulk samples in the relative humidity (RH) range 30-90% in a climatic chamber in the frequency range 42 Hz- 1 MHz at working temperatures of 25 and 50 degrees C. Change in RH had a significant influence on impedance reduction, especially noticeable in the lower frequency range, indicating potential application of this nanocomposite as a humidity sensing material. Increase in RH led to an increase in AC conductivity that changed with frequency according to the Jonscher power law. The frequency exponent decreased with increase in RH and sample temperature indicating that the correlated hopping barrier model is the dominant conduction mechanism. Complex impedance was analyzed using an equivalent circuit consisting of a parallel resistance and constant phase element, showing the dominant influence of grain boundaries at both working temperatures (25 and 50 degrees C). The resistance decreased, while the capacitance and relaxation frequency increased with increase in RH. At high humidity an added Wartburg element enabled modeling of the charge diffusion process.", publisher = "Springer, Dordrecht", journal = "Journal of Electroceramics", title = "Nanocrystalline Zn2SnO4/SnO2: Crystal structure and humidity influence on complex impedance", pages = "147-135", number = "4", volume = "45", doi = "10.1007/s10832-021-00232-z" }
Nikolić, M. V., Labus, N. J., Pavlović, V. P., Marković, S., Luković, M., Tadić, N. B., Vujančević, J., Vlahović, B.,& Pavlović, V. B.. (2020). Nanocrystalline Zn2SnO4/SnO2: Crystal structure and humidity influence on complex impedance. in Journal of Electroceramics Springer, Dordrecht., 45(4), 135-147. https://doi.org/10.1007/s10832-021-00232-z
Nikolić MV, Labus NJ, Pavlović VP, Marković S, Luković M, Tadić NB, Vujančević J, Vlahović B, Pavlović VB. Nanocrystalline Zn2SnO4/SnO2: Crystal structure and humidity influence on complex impedance. in Journal of Electroceramics. 2020;45(4):135-147. doi:10.1007/s10832-021-00232-z .
Nikolić, Maria Vesna, Labus, Nebojša J., Pavlović, Vera P., Marković, Smilja, Luković, Miloljub, Tadić, Nenad B., Vujančević, Jelena, Vlahović, Branislav, Pavlović, Vladimir B, "Nanocrystalline Zn2SnO4/SnO2: Crystal structure and humidity influence on complex impedance" in Journal of Electroceramics, 45, no. 4 (2020):135-147, https://doi.org/10.1007/s10832-021-00232-z . .