Study of dielectric behavior and electrical properties of hematite α-Fe2O3 doped with Zn

2012
Authors
Nikolić, Maria Vesna
Slankamenac, Miloš
Nikolić, Nataša
Sekulić, D.
Aleksić, Obrad S.
Mitrić, Miodrag

Ivetić, Tamara

Pavlović, Vladimir B.

Contributors
Ristić, Momčilo M.Article (Published version)
Metadata
Show full item recordAbstract
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 transportSource:
Science of Sintering, 2012, 44, 2, 307-321Publisher:
- Belgrade : International Institute for the Science of Sintering
Funding / projects:
DOI: 10.2298/SOS1203307N
ISSN: 1820-7413; 0350-820X
WoS: 000318149200007
Scopus: 2-s2.0-84871184897
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - 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 - https://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 UR - https://hdl.handle.net/21.15107/rcub_dais_197 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", 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", url = "https://hdl.handle.net/21.15107/rcub_dais_197" }
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. in Science of Sintering Belgrade : International Institute for the Science of Sintering., 44(2), 307-321. https://doi.org/10.2298/SOS1203307N https://hdl.handle.net/21.15107/rcub_dais_197
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. in Science of Sintering. 2012;44(2):307-321. doi:10.2298/SOS1203307N https://hdl.handle.net/21.15107/rcub_dais_197 .
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" in Science of Sintering, 44, no. 2 (2012):307-321, https://doi.org/10.2298/SOS1203307N ., https://hdl.handle.net/21.15107/rcub_dais_197 .