Iron manganite (FeMnO3) powder with a cubic (bixbyite,
−
Ia3) crystal structure was obtained by a solid state
reaction. Thick film paste (powder+organic vehicles) was screen printed on alumina substrate with test interdigitated
PdAg electrodes. Significant porosity (60.6%) composed of macropores (larger than 100 nm) was
determined by Hg porosimetry, changing only slightly from the first extrusion run indicating a stable pore
system. Hg porosimetry evaluation of thick film samples enabled estimation of true textural parameters of the
thick film compared to powder. Impedance response of the thick film sensor was monitored in a humidity
chamber in the relative humidity (RH) range 30–90%, at room temperature (25 °C) and frequency range from
42 Hz to 1 MHz. At 100 Hz the impedance reduced from 10.41 MΩ for RH 30% to 0.68 MΩ for RH 90%. Analysis
of complex impedance using an equivalent circuit showed the dominant influence of grain boundaries. The
sensor response and recovery was ...fast (several seconds) and a relatively low hysteresis value of 2.8% was
obtained.
Keywords:
Iron manganite / Humidity sensing / Mercury porosimetry / Thick films / Complex impedance
Source:
Materials Science and Engineering B: Solid-State Materials for Advanced Technology, 2020, 257, 114547-
TY - JOUR
AU - Nikolić, Maria Vesna
AU - Krstić, Jugoslav
AU - Labus, Nebojša
AU - Luković, Miloljub
AU - Dojčinović, Milena P.
AU - Radovanović, Milan
AU - Tadić, Nenad
PY - 2020
UR - https://cer.ihtm.bg.ac.rs/handle/123456789/3573
AB - Iron manganite (FeMnO3) powder with a cubic (bixbyite,
−
Ia3) crystal structure was obtained by a solid state
reaction. Thick film paste (powder+organic vehicles) was screen printed on alumina substrate with test interdigitated
PdAg electrodes. Significant porosity (60.6%) composed of macropores (larger than 100 nm) was
determined by Hg porosimetry, changing only slightly from the first extrusion run indicating a stable pore
system. Hg porosimetry evaluation of thick film samples enabled estimation of true textural parameters of the
thick film compared to powder. Impedance response of the thick film sensor was monitored in a humidity
chamber in the relative humidity (RH) range 30–90%, at room temperature (25 °C) and frequency range from
42 Hz to 1 MHz. At 100 Hz the impedance reduced from 10.41 MΩ for RH 30% to 0.68 MΩ for RH 90%. Analysis
of complex impedance using an equivalent circuit showed the dominant influence of grain boundaries. The
sensor response and recovery was fast (several seconds) and a relatively low hysteresis value of 2.8% was
obtained.
PB - Elsevier
T2 - Materials Science and Engineering B: Solid-State Materials for Advanced Technology
T1 - Structural, morphological and textural properties of iron manganite (FeMnO3) thick films applied for humidity sensing
VL - 257
SP - 114547
DO - 10.1016/j.mseb.2020.114547
ER -
@article{
author = "Nikolić, Maria Vesna and Krstić, Jugoslav and Labus, Nebojša and Luković, Miloljub and Dojčinović, Milena P. and Radovanović, Milan and Tadić, Nenad",
year = "2020",
abstract = "Iron manganite (FeMnO3) powder with a cubic (bixbyite,
−
Ia3) crystal structure was obtained by a solid state
reaction. Thick film paste (powder+organic vehicles) was screen printed on alumina substrate with test interdigitated
PdAg electrodes. Significant porosity (60.6%) composed of macropores (larger than 100 nm) was
determined by Hg porosimetry, changing only slightly from the first extrusion run indicating a stable pore
system. Hg porosimetry evaluation of thick film samples enabled estimation of true textural parameters of the
thick film compared to powder. Impedance response of the thick film sensor was monitored in a humidity
chamber in the relative humidity (RH) range 30–90%, at room temperature (25 °C) and frequency range from
42 Hz to 1 MHz. At 100 Hz the impedance reduced from 10.41 MΩ for RH 30% to 0.68 MΩ for RH 90%. Analysis
of complex impedance using an equivalent circuit showed the dominant influence of grain boundaries. The
sensor response and recovery was fast (several seconds) and a relatively low hysteresis value of 2.8% was
obtained.",
publisher = "Elsevier",
journal = "Materials Science and Engineering B: Solid-State Materials for Advanced Technology",
title = "Structural, morphological and textural properties of iron manganite (FeMnO3) thick films applied for humidity sensing",
volume = "257",
pages = "114547",
doi = "10.1016/j.mseb.2020.114547"
}
Nikolić, M. V., Krstić, J., Labus, N., Luković, M., Dojčinović, M. P., Radovanović, M.,& Tadić, N.. (2020). Structural, morphological and textural properties of iron manganite (FeMnO3) thick films applied for humidity sensing. in Materials Science and Engineering B: Solid-State Materials for Advanced Technology
Elsevier., 257, 114547.
https://doi.org/10.1016/j.mseb.2020.114547
Nikolić MV, Krstić J, Labus N, Luković M, Dojčinović MP, Radovanović M, Tadić N. Structural, morphological and textural properties of iron manganite (FeMnO3) thick films applied for humidity sensing. in Materials Science and Engineering B: Solid-State Materials for Advanced Technology. 2020;257:114547.
doi:10.1016/j.mseb.2020.114547 .
Nikolić, Maria Vesna, Krstić, Jugoslav, Labus, Nebojša, Luković, Miloljub, Dojčinović, Milena P., Radovanović, Milan, Tadić, Nenad, "Structural, morphological and textural properties of iron manganite (FeMnO3) thick films applied for humidity sensing" in Materials Science and Engineering B: Solid-State Materials for Advanced Technology, 257 (2020):114547,
https://doi.org/10.1016/j.mseb.2020.114547 . .
