Low-Temperature DC Carrier Transport in (Co_{0.45}Fe_{0.45}Zr_{0.10})_{x}(Al_2O_3)_{1-x} Nanocomposites Sputtered in Mixed Argon-Oxygen Atmosphere

• Authors: I. Svito , A. Fedotov , A. Saad , T. Koltunowicz , P. Zukowski , P. Bury
• Languages of publication: EN

Abstracts

EN

This paper studies the temperature dependences (2 < T < 300 K) of the DC conductivity σ(T) for the (Co_{0.45}Fe_{0.45}Zr_{0.10})_x(Al_2O_3)_{1-x} nanocomposites (30 < x < 65 at.%) sputtered in Ar + O_2 atmosphere. It is shown that at temperatures lower than 100-150 K dependences of DC conductance on temperature for all the studied samples are due to the Shklovski-Efros variable range hopping mechanism. It was also observed that σ(x,T) dependences can be attributed to the formation of FeCo-based oxide "shells" around metallic alloy nanoparticles due to incorporation of oxygen in the vacuum chamber during the deposition procedure.

Keywords

EN

73.22.-f; 72.20.Ee; 64.60.ah

Discipline

• 64.60.ah: Percolation
• 73.22.-f: Electronic structure of nanoscale materials and related systems
• 72.20.Ee: Mobility edges; hopping transport

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 125
• Issue: 6
• Pages: 1351-1355

Dates

published

2014-06

Contributors

author

I. Svito

• Belarusian State University, Independence av. 4, 220030 Minsk, Belarus

author

A. Fedotov

• Belarusian State University, Independence av. 4, 220030 Minsk, Belarus

author

A. Saad

• Al Balqa Applied University, Physics Department, P.O. Box 4545, Amman 11953, Jordan

author

T. Koltunowicz

• Department of Electrical Devices and High Voltages Technologies, Lublin University of Technology Nadbystrzycka 38a, 20-618 Lublin, Poland

author

P. Zukowski

• Department of Electrical Devices and High Voltages Technologies, Lublin University of Technology Nadbystrzycka 38a, 20-618 Lublin, Poland

author

P. Bury

• University of Žilina, Univerzitna 1, 010 26 Žilina, Slovakia

References

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Identifiers

DOI

10.12693/APhysPolA.125.1351