Influence of humidity on complex impedance and dielectric properties of iron manganite (FeMnO3)
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2019
Članak u časopisu (Objavljena verzija)

Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Bulk samples of iron manganite with a cubic Ia3 lt mml:mo stretchy="false"> lt overbar> lt /mml:mover> crystal structure were obtained by solid state synthesis (combination of milling and calcination) of starting hematite (Fe2O3) and manganese carbonate (MnCO3) powders followed by sintering green samples at 1000 degrees C for 4h. Structural characterization performed by XRD and SEM analysis confirmed the formation of iron manganite in the form of a porous network of grains and pores with average particle size of 530 and 430nm, respectively. The influence of humidity on complex impedance and dielectric properties was monitored in the relative humidity range 30-90% in a climatic chamber in the frequency range 42Hz-1MHz at working temperatures of 25 and 50 degrees C. At the lowest frequency of 42Hz the impedance reduced with relative humidity from 57.9 (RH 30%) to 3.21M ohm (RH 90%) at 25 degrees C, and from 23.3 (RH 30%) to 1.3M ohm (RH 90%) at 50 degrees C that is approximately 20 times.... Analysis of complex impedance using an equivalent circuit showed the dominant influence of grain boundaries. The influence of grains (bulk) was taken into account for higher relative humidity values (70% at 25 degrees C and 60% at 50 degrees C) that is related to the mechanism of water interaction with the sample surface. The dielectric constant and loss tangent decreased with increase in frequency in accordance with the Maxwell-Wagner type interfacial polarization mechanism and also increased with increase in relative humidity.
Ključne reči:
FeMnO3 / humidity / complex impedance / dielectric propertiesIzvor:
Journal of Materials Science-Materials in Electronics, 2019, 30, 13, 12399-12405Izdavač:
- Springer, Dordrecht
Finansiranje / projekti:
- 0-3D nanostrukture za primenu u elektronici i obnovljivim izvorima energije: sinteza, karakterizacija i procesiranje (RS-45007)
- Litijum-jon baterije i gorivne ćelije-istraživanje i razvoj (RS-45014)
DOI: 10.1007/s10854-019-01598-1
ISSN: 0957-4522
WoS: 000475587800057
Scopus: 2-s2.0-85066796739
Institucija/grupa
Institut za multidisciplinarna istraživanjaTY - JOUR AU - Nikolić, Maria Vesna AU - Luković, Miloljub AU - Labus, Nebojša J. PY - 2019 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/1211 AB - Bulk samples of iron manganite with a cubic Ia3 lt mml:mo stretchy="false"> lt overbar> lt /mml:mover> crystal structure were obtained by solid state synthesis (combination of milling and calcination) of starting hematite (Fe2O3) and manganese carbonate (MnCO3) powders followed by sintering green samples at 1000 degrees C for 4h. Structural characterization performed by XRD and SEM analysis confirmed the formation of iron manganite in the form of a porous network of grains and pores with average particle size of 530 and 430nm, respectively. The influence of humidity on complex impedance and dielectric properties was monitored in the relative humidity range 30-90% in a climatic chamber in the frequency range 42Hz-1MHz at working temperatures of 25 and 50 degrees C. At the lowest frequency of 42Hz the impedance reduced with relative humidity from 57.9 (RH 30%) to 3.21M ohm (RH 90%) at 25 degrees C, and from 23.3 (RH 30%) to 1.3M ohm (RH 90%) at 50 degrees C that is approximately 20 times. Analysis of complex impedance using an equivalent circuit showed the dominant influence of grain boundaries. The influence of grains (bulk) was taken into account for higher relative humidity values (70% at 25 degrees C and 60% at 50 degrees C) that is related to the mechanism of water interaction with the sample surface. The dielectric constant and loss tangent decreased with increase in frequency in accordance with the Maxwell-Wagner type interfacial polarization mechanism and also increased with increase in relative humidity. PB - Springer, Dordrecht T2 - Journal of Materials Science-Materials in Electronics T1 - Influence of humidity on complex impedance and dielectric properties of iron manganite (FeMnO3) EP - 12405 IS - 13 SP - 12399 VL - 30 DO - 10.1007/s10854-019-01598-1 ER -
@article{ author = "Nikolić, Maria Vesna and Luković, Miloljub and Labus, Nebojša J.", year = "2019", abstract = "Bulk samples of iron manganite with a cubic Ia3 lt mml:mo stretchy="false"> lt overbar> lt /mml:mover> crystal structure were obtained by solid state synthesis (combination of milling and calcination) of starting hematite (Fe2O3) and manganese carbonate (MnCO3) powders followed by sintering green samples at 1000 degrees C for 4h. Structural characterization performed by XRD and SEM analysis confirmed the formation of iron manganite in the form of a porous network of grains and pores with average particle size of 530 and 430nm, respectively. The influence of humidity on complex impedance and dielectric properties was monitored in the relative humidity range 30-90% in a climatic chamber in the frequency range 42Hz-1MHz at working temperatures of 25 and 50 degrees C. At the lowest frequency of 42Hz the impedance reduced with relative humidity from 57.9 (RH 30%) to 3.21M ohm (RH 90%) at 25 degrees C, and from 23.3 (RH 30%) to 1.3M ohm (RH 90%) at 50 degrees C that is approximately 20 times. Analysis of complex impedance using an equivalent circuit showed the dominant influence of grain boundaries. The influence of grains (bulk) was taken into account for higher relative humidity values (70% at 25 degrees C and 60% at 50 degrees C) that is related to the mechanism of water interaction with the sample surface. The dielectric constant and loss tangent decreased with increase in frequency in accordance with the Maxwell-Wagner type interfacial polarization mechanism and also increased with increase in relative humidity.", publisher = "Springer, Dordrecht", journal = "Journal of Materials Science-Materials in Electronics", title = "Influence of humidity on complex impedance and dielectric properties of iron manganite (FeMnO3)", pages = "12405-12399", number = "13", volume = "30", doi = "10.1007/s10854-019-01598-1" }
Nikolić, M. V., Luković, M.,& Labus, N. J.. (2019). Influence of humidity on complex impedance and dielectric properties of iron manganite (FeMnO3). in Journal of Materials Science-Materials in Electronics Springer, Dordrecht., 30(13), 12399-12405. https://doi.org/10.1007/s10854-019-01598-1
Nikolić MV, Luković M, Labus NJ. Influence of humidity on complex impedance and dielectric properties of iron manganite (FeMnO3). in Journal of Materials Science-Materials in Electronics. 2019;30(13):12399-12405. doi:10.1007/s10854-019-01598-1 .
Nikolić, Maria Vesna, Luković, Miloljub, Labus, Nebojša J., "Influence of humidity on complex impedance and dielectric properties of iron manganite (FeMnO3)" in Journal of Materials Science-Materials in Electronics, 30, no. 13 (2019):12399-12405, https://doi.org/10.1007/s10854-019-01598-1 . .