TY  - JOUR
AU  - Svito, Ivan A.
AU  - Fedotov, Alexander K.
AU  - Saad, Anis
AU  - Milosavljević, Momir
AU  - Fedotova, Julia A.
AU  - Koltunowicz, Tomasz N.
AU  - Zukowski, Pawel
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/431
AB  - This presented work investigates the structure and temperature relationship/dependence of the DC conductivity sigma(T) in the (Fe0.45Co0.45Zr0.10)(x)(Al2O3)(1-x) nanocomposites deposited in Ar atmosphere with composition (30 LT x LT 100 at.%) and temperature (2 LT T LT 300 K). It is shown that VRH sigma(T) displayed crossover from Mott-like to Shklovskii-Efros regimes which occurred at temperatures of 100-120K. It is also noted that the observed shift of the percolation threshold to higher concentrations of metallic fraction can be attributed to the disordering of the metallic nanoparticles due to the incorporation of the residual oxygen in the vacuum chamber during the deposition procedure.
T2  - Advances in Condensed Matter Physics
T1  - Low-Temperature DC Carrier Transport in (Fe0.45Co0.45Zr0.10)(x)(Al2O3)(1-x) Nanocomposites Manufactured by Sputtering in Pure Ar Gas Atmosphere
DO  - 10.1155/2015/320187
ER  - 

@article{
author = "Svito, Ivan A. and Fedotov, Alexander K. and Saad, Anis and Milosavljević, Momir and Fedotova, Julia A. and Koltunowicz, Tomasz N. and Zukowski, Pawel",
year = "2015",
abstract = "This presented work investigates the structure and temperature relationship/dependence of the DC conductivity sigma(T) in the (Fe0.45Co0.45Zr0.10)(x)(Al2O3)(1-x) nanocomposites deposited in Ar atmosphere with composition (30 LT x LT 100 at.%) and temperature (2 LT T LT 300 K). It is shown that VRH sigma(T) displayed crossover from Mott-like to Shklovskii-Efros regimes which occurred at temperatures of 100-120K. It is also noted that the observed shift of the percolation threshold to higher concentrations of metallic fraction can be attributed to the disordering of the metallic nanoparticles due to the incorporation of the residual oxygen in the vacuum chamber during the deposition procedure.",
journal = "Advances in Condensed Matter Physics",
title = "Low-Temperature DC Carrier Transport in (Fe0.45Co0.45Zr0.10)(x)(Al2O3)(1-x) Nanocomposites Manufactured by Sputtering in Pure Ar Gas Atmosphere",
doi = "10.1155/2015/320187"
}

Svito, I. A., Fedotov, A. K., Saad, A., Milosavljević, M., Fedotova, J. A., Koltunowicz, T. N.,& Zukowski, P.. (2015). Low-Temperature DC Carrier Transport in (Fe0.45Co0.45Zr0.10)(x)(Al2O3)(1-x) Nanocomposites Manufactured by Sputtering in Pure Ar Gas Atmosphere. in Advances in Condensed Matter Physics.
https://doi.org/10.1155/2015/320187

Svito IA, Fedotov AK, Saad A, Milosavljević M, Fedotova JA, Koltunowicz TN, Zukowski P. Low-Temperature DC Carrier Transport in (Fe0.45Co0.45Zr0.10)(x)(Al2O3)(1-x) Nanocomposites Manufactured by Sputtering in Pure Ar Gas Atmosphere. in Advances in Condensed Matter Physics. 2015;.
doi:10.1155/2015/320187 .

Svito, Ivan A., Fedotov, Alexander K., Saad, Anis, Milosavljević, Momir, Fedotova, Julia A., Koltunowicz, Tomasz N., Zukowski, Pawel, "Low-Temperature DC Carrier Transport in (Fe0.45Co0.45Zr0.10)(x)(Al2O3)(1-x) Nanocomposites Manufactured by Sputtering in Pure Ar Gas Atmosphere" in Advances in Condensed Matter Physics (2015),
https://doi.org/10.1155/2015/320187 . .

TY  - JOUR
AU  - Svito, I.
AU  - Fedotova, J. A.
AU  - Milosavljević, Momir
AU  - Zhukowski, P.
AU  - Koltunowicz, T. N.
AU  - Saad, A.
AU  - Kierczynski, Konrad
AU  - Fedotov, A. K.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7039
AB  - The present paper investigates conductivity sigma for a wide temperature range of 2 K LT T LT 300 K in the nanocomposite (FeCoZr)(x)(Al2O3)(1-x) films (1-6 mu m thicknesses, 0.30 LT x LT 1.00) which were sputtered on glass-ceramic substrates from the compound target in vacuum chamber filled with Ar (set 1 films) or Ar + O-2 gas mixture (set 2 films). TEM and HRTEM images revealed that granular films of set 1 containing nanosized crystalline metallic bcc alpha-FeCo-based nanoparticles embedded in the amorphous Al2O3 matrix. In case of Ar + O atmosphere of deposited alpha-FeCo-based crystalline cores with stabilized sizes were covered with an amorphous FeCo-based oxide shells. The sigma(T) dependences were found to be in agreement with this phase structure. They show transition of the set 1 films sigma(T) curves with x from tunneling (hopping) behavior below the percolation threshold x LT x(c) approximate to 0.46 to metallic one for x GT x(c). Moreover, as opposed to such behavior, for the set 2 films hopping mechanism of sigma(T) was revealed far beyond x(c) due to the formation of semiconducting FeCo-based oxide shells separating electrically contacting FeCoZr cores. (C) 2013 Elsevier B.V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Influence of sputtering atmosphere on hopping conductance in granular nanocomposite (FeCoZr)(x)(Al2O3)(1-x) films
VL  - 615
SP  - S344
EP  - S347
DO  - 10.1016/j.jallcom.2013.12.061
ER  - 

@article{
author = "Svito, I. and Fedotova, J. A. and Milosavljević, Momir and Zhukowski, P. and Koltunowicz, T. N. and Saad, A. and Kierczynski, Konrad and Fedotov, A. K.",
year = "2014",
abstract = "The present paper investigates conductivity sigma for a wide temperature range of 2 K LT T LT 300 K in the nanocomposite (FeCoZr)(x)(Al2O3)(1-x) films (1-6 mu m thicknesses, 0.30 LT x LT 1.00) which were sputtered on glass-ceramic substrates from the compound target in vacuum chamber filled with Ar (set 1 films) or Ar + O-2 gas mixture (set 2 films). TEM and HRTEM images revealed that granular films of set 1 containing nanosized crystalline metallic bcc alpha-FeCo-based nanoparticles embedded in the amorphous Al2O3 matrix. In case of Ar + O atmosphere of deposited alpha-FeCo-based crystalline cores with stabilized sizes were covered with an amorphous FeCo-based oxide shells. The sigma(T) dependences were found to be in agreement with this phase structure. They show transition of the set 1 films sigma(T) curves with x from tunneling (hopping) behavior below the percolation threshold x LT x(c) approximate to 0.46 to metallic one for x GT x(c). Moreover, as opposed to such behavior, for the set 2 films hopping mechanism of sigma(T) was revealed far beyond x(c) due to the formation of semiconducting FeCo-based oxide shells separating electrically contacting FeCoZr cores. (C) 2013 Elsevier B.V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Influence of sputtering atmosphere on hopping conductance in granular nanocomposite (FeCoZr)(x)(Al2O3)(1-x) films",
volume = "615",
pages = "S344-S347",
doi = "10.1016/j.jallcom.2013.12.061"
}

Svito, I., Fedotova, J. A., Milosavljević, M., Zhukowski, P., Koltunowicz, T. N., Saad, A., Kierczynski, K.,& Fedotov, A. K.. (2014). Influence of sputtering atmosphere on hopping conductance in granular nanocomposite (FeCoZr)(x)(Al2O3)(1-x) films. in Journal of Alloys and Compounds, 615, S344-S347.
https://doi.org/10.1016/j.jallcom.2013.12.061

Svito I, Fedotova JA, Milosavljević M, Zhukowski P, Koltunowicz TN, Saad A, Kierczynski K, Fedotov AK. Influence of sputtering atmosphere on hopping conductance in granular nanocomposite (FeCoZr)(x)(Al2O3)(1-x) films. in Journal of Alloys and Compounds. 2014;615:S344-S347.
doi:10.1016/j.jallcom.2013.12.061 .

Svito, I., Fedotova, J. A., Milosavljević, Momir, Zhukowski, P., Koltunowicz, T. N., Saad, A., Kierczynski, Konrad, Fedotov, A. K., "Influence of sputtering atmosphere on hopping conductance in granular nanocomposite (FeCoZr)(x)(Al2O3)(1-x) films" in Journal of Alloys and Compounds, 615 (2014):S344-S347,
https://doi.org/10.1016/j.jallcom.2013.12.061 . .