TY  - JOUR
AU  - Savić, Slavica M.
AU  - Nikolić, Maria Vesna
AU  - Aleksić, Obrad
AU  - Slankamenac, Milos P
AU  - Živanov, M.
AU  - Nikolić, Pantelija M.
PY  - 2008
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/260
AB  - In this work the DC resistivity of sintered nickel manganite NiMn2O4 (NTC thermistor material) was studied as a function of additional powder activation time in a planetary ball mill (0, 5, 15, 30, 45 and 60 min). The activated powders and non-activated powder were sintered at different temperatures (900, 1050 and 1200 degrees C) for an hour. Structural changes were analyzed using XRD. Sample density, porosity and DC resistivity were measured on the same sintered samples. Correlations between sample density, porosity, and intrinsic DC resistivity vs. additional powder activation time and the sintering temperature were made. It was noticed that the resistivity falls with the increase of sample density (or increase of the sintering temperature).
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Intrinsic resistivity of sintered nickel manganite vs. powder activation time and density
EP  - 32
IS  - 1
SP  - 27
VL  - 40
DO  - 10.2298/SOS0801027S
ER  - 

@article{
author = "Savić, Slavica M. and Nikolić, Maria Vesna and Aleksić, Obrad and Slankamenac, Milos P and Živanov, M. and Nikolić, Pantelija M.",
year = "2008",
abstract = "In this work the DC resistivity of sintered nickel manganite NiMn2O4 (NTC thermistor material) was studied as a function of additional powder activation time in a planetary ball mill (0, 5, 15, 30, 45 and 60 min). The activated powders and non-activated powder were sintered at different temperatures (900, 1050 and 1200 degrees C) for an hour. Structural changes were analyzed using XRD. Sample density, porosity and DC resistivity were measured on the same sintered samples. Correlations between sample density, porosity, and intrinsic DC resistivity vs. additional powder activation time and the sintering temperature were made. It was noticed that the resistivity falls with the increase of sample density (or increase of the sintering temperature).",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Intrinsic resistivity of sintered nickel manganite vs. powder activation time and density",
pages = "32-27",
number = "1",
volume = "40",
doi = "10.2298/SOS0801027S"
}

Savić, S. M., Nikolić, M. V., Aleksić, O., Slankamenac, M. P., Živanov, M.,& Nikolić, P. M.. (2008). Intrinsic resistivity of sintered nickel manganite vs. powder activation time and density. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 40(1), 27-32.
https://doi.org/10.2298/SOS0801027S

Savić SM, Nikolić MV, Aleksić O, Slankamenac MP, Živanov M, Nikolić PM. Intrinsic resistivity of sintered nickel manganite vs. powder activation time and density. in Science of Sintering. 2008;40(1):27-32.
doi:10.2298/SOS0801027S .

Savić, Slavica M., Nikolić, Maria Vesna, Aleksić, Obrad, Slankamenac, Milos P, Živanov, M., Nikolić, Pantelija M., "Intrinsic resistivity of sintered nickel manganite vs. powder activation time and density" in Science of Sintering, 40, no. 1 (2008):27-32,
https://doi.org/10.2298/SOS0801027S . .

TY  - JOUR
AU  - Ivetić, Tamara B.
AU  - Nikolić, Maria Vesna
AU  - Slankamenac, Milos P
AU  - Živanov, M.
AU  - Minic, Dragica
AU  - Nikolić, Pantelija M.
AU  - Ristic, M. M.
PY  - 2007
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/183
AB  - The effects of small amounts (0.5; 1.0 and 1.5 mol. %) of bismuth oxide on the microstructure and electrical properties of ZnO-SnO2 ceramics have been studied. Starting powders of ZnO and SnO2 were mixed in the molar ratio 2:1. After adding Bi2O3 this mixture was mechanically activated for 10 minutes in a planetary ball mill, uniaxially pressed and sintered at 1300 degrees C for 2h. The phase composition of the sintered samples was analyzed by X-Ray Diffraction (ARD) and by Energy Dispersive Spectrometer (EDS). Morphologies were examined by Scanning Electron Microscopy (SEM). An ImpedancelGain Phase Analyzer (HP 4194A) was used to measure the impedance spectra (100Hz - 10MHz) at different temperatures. The electrical DC resistivity/conductivity at different temperatures was measured using a High Resistance Meter (HP 4329A).
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Influence of Bi2O3 on microstructure and electrical properties of ZnO-SnO2 ceramics
EP  - 240
IS  - 3
SP  - 229
VL  - 39
DO  - 10.2298/SOS0703229I
ER  - 

@article{
author = "Ivetić, Tamara B. and Nikolić, Maria Vesna and Slankamenac, Milos P and Živanov, M. and Minic, Dragica and Nikolić, Pantelija M. and Ristic, M. M.",
year = "2007",
abstract = "The effects of small amounts (0.5; 1.0 and 1.5 mol. %) of bismuth oxide on the microstructure and electrical properties of ZnO-SnO2 ceramics have been studied. Starting powders of ZnO and SnO2 were mixed in the molar ratio 2:1. After adding Bi2O3 this mixture was mechanically activated for 10 minutes in a planetary ball mill, uniaxially pressed and sintered at 1300 degrees C for 2h. The phase composition of the sintered samples was analyzed by X-Ray Diffraction (ARD) and by Energy Dispersive Spectrometer (EDS). Morphologies were examined by Scanning Electron Microscopy (SEM). An ImpedancelGain Phase Analyzer (HP 4194A) was used to measure the impedance spectra (100Hz - 10MHz) at different temperatures. The electrical DC resistivity/conductivity at different temperatures was measured using a High Resistance Meter (HP 4329A).",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Influence of Bi2O3 on microstructure and electrical properties of ZnO-SnO2 ceramics",
pages = "240-229",
number = "3",
volume = "39",
doi = "10.2298/SOS0703229I"
}

Ivetić, T. B., Nikolić, M. V., Slankamenac, M. P., Živanov, M., Minic, D., Nikolić, P. M.,& Ristic, M. M.. (2007). Influence of Bi2O3 on microstructure and electrical properties of ZnO-SnO2 ceramics. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 39(3), 229-240.
https://doi.org/10.2298/SOS0703229I

Ivetić TB, Nikolić MV, Slankamenac MP, Živanov M, Minic D, Nikolić PM, Ristic MM. Influence of Bi2O3 on microstructure and electrical properties of ZnO-SnO2 ceramics. in Science of Sintering. 2007;39(3):229-240.
doi:10.2298/SOS0703229I .

Ivetić, Tamara B., Nikolić, Maria Vesna, Slankamenac, Milos P, Živanov, M., Minic, Dragica, Nikolić, Pantelija M., Ristic, M. M., "Influence of Bi2O3 on microstructure and electrical properties of ZnO-SnO2 ceramics" in Science of Sintering, 39, no. 3 (2007):229-240,
https://doi.org/10.2298/SOS0703229I . .