The effects of Zn-doping on the dielectric behavior and electrical properties of bulk α-Fe2O3 have been studied. X-ray diffraction analysis revealed the presence of two phases in all samples: hematite and spinel ZnFe2O4, with the amount of spinel phase increasing with increasing Zn content. Scanning electron microscopy analysis combined with energy dispersive X-ray spectroscopy showed that the Zn-bearing phase occurred in the form of individual spinel ZnFe2O4 grains in a hematite matrix. DC conductivity was measured in the temperature range 25-225oC (298-498 K). Impedance spectroscopy measurements in the same temperature range were carried out in the frequency range 100Hz to 10 MHz. Increase in the Zn content resulted in increased electrical conductivity and higher values of the dielectric constant. The resistance and capacitance of grains and grain boundaries were analyzed by modeling the experimental results using an equivalent circuit. [Projekat Ministarstva nauke Republike Srbije, ...br. III 45014]
Keywords:
X-ray diffraction / scanning electron microscopy / SEM / dielectric response / electrical transport
Source:
Science of Sintering, 2012, 44, 2, 307-321
Publisher:
Belgrade : International Institute for the Science of Sintering
TY - JOUR
AU - Nikolić, Maria Vesna
AU - Slankamenac, Miloš
AU - Nikolić, Nataša
AU - Sekulić, D.
AU - Aleksić, Obrad S.
AU - Mitrić, Miodrag
AU - Ivetić, Tamara
AU - Pavlović, Vladimir B.
PY - 2012
UR - http://dais.sanu.ac.rs/123456789/197
AB - The effects of Zn-doping on the dielectric behavior and electrical properties of bulk α-Fe2O3 have been studied. X-ray diffraction analysis revealed the presence of two phases in all samples: hematite and spinel ZnFe2O4, with the amount of spinel phase increasing with increasing Zn content. Scanning electron microscopy analysis combined with energy dispersive X-ray spectroscopy showed that the Zn-bearing phase occurred in the form of individual spinel ZnFe2O4 grains in a hematite matrix. DC conductivity was measured in the temperature range 25-225oC (298-498 K). Impedance spectroscopy measurements in the same temperature range were carried out in the frequency range 100Hz to 10 MHz. Increase in the Zn content resulted in increased electrical conductivity and higher values of the dielectric constant. The resistance and capacitance of grains and grain boundaries were analyzed by modeling the experimental results using an equivalent circuit. [Projekat Ministarstva nauke Republike Srbije, br. III 45014]
PB - Belgrade : International Institute for the Science of Sintering
T2 - Science of Sintering
T1 - Study of dielectric behavior and electrical properties of hematite α-Fe2O3 doped with Zn
SP - 307
EP - 321
VL - 44
IS - 2
DO - 10.2298/SOS1203307N
ER -
@article{
author = "Nikolić, Maria Vesna and Slankamenac, Miloš and Nikolić, Nataša and Sekulić, D. and Aleksić, Obrad S. and Mitrić, Miodrag and Ivetić, Tamara and Pavlović, Vladimir B.",
year = "2012",
url = "http://dais.sanu.ac.rs/123456789/197",
abstract = "The effects of Zn-doping on the dielectric behavior and electrical properties of bulk α-Fe2O3 have been studied. X-ray diffraction analysis revealed the presence of two phases in all samples: hematite and spinel ZnFe2O4, with the amount of spinel phase increasing with increasing Zn content. Scanning electron microscopy analysis combined with energy dispersive X-ray spectroscopy showed that the Zn-bearing phase occurred in the form of individual spinel ZnFe2O4 grains in a hematite matrix. DC conductivity was measured in the temperature range 25-225oC (298-498 K). Impedance spectroscopy measurements in the same temperature range were carried out in the frequency range 100Hz to 10 MHz. Increase in the Zn content resulted in increased electrical conductivity and higher values of the dielectric constant. The resistance and capacitance of grains and grain boundaries were analyzed by modeling the experimental results using an equivalent circuit. [Projekat Ministarstva nauke Republike Srbije, br. III 45014]",
publisher = "Belgrade : International Institute for the Science of Sintering",
journal = "Science of Sintering",
title = "Study of dielectric behavior and electrical properties of hematite α-Fe2O3 doped with Zn",
pages = "307-321",
volume = "44",
number = "2",
doi = "10.2298/SOS1203307N"
}
Nikolić MV, Slankamenac M, Nikolić N, Sekulić D, Aleksić OS, Mitrić M, Ivetić T, Pavlović VB. Study of dielectric behavior and electrical properties of hematite α-Fe2O3 doped with Zn. Science of Sintering. 2012;44(2):307-321
Nikolić, M. V., Slankamenac, M., Nikolić, N., Sekulić, D., Aleksić, O. S., Mitrić, M., Ivetić, T.,& Pavlović, V. B. (2012). Study of dielectric behavior and electrical properties of hematite α-Fe2O3 doped with Zn.
Science of SinteringBelgrade : International Institute for the Science of Sintering., 44(2), 307-321.
https://doi.org/10.2298/SOS1203307N
Nikolić Maria Vesna, Slankamenac Miloš, Nikolić Nataša, Sekulić D., Aleksić Obrad S., Mitrić Miodrag, Ivetić Tamara, Pavlović Vladimir B., "Study of dielectric behavior and electrical properties of hematite α-Fe2O3 doped with Zn" 44, no. 2 (2012):307-321,
https://doi.org/10.2298/SOS1203307N .
