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2011 | 120 | 1 | 39-42
Article title

Hopping Conductance in Nanocomposites (Fe_{0.45}Co_{0.45}Zr_{0.10})_{x}(Al_2O_3)_{1 - x} Manufactured by Ion-Beam Sputtering of Complex Target in Ar+O_2 Ambient Gas

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Abstracts
EN
We report the investigation of a real part of the admittance σ of granular nanocomposites (Fe_{0.45}Co_{0.45}Zr_{0.10})_{x}(Al_2O_3)_{1 - x} with 0.30 < x < 0.70 in the dielectric (hopping) regime. An analysis of the σ(T, f, x) dependences in the as-deposited and annealed films over the temperature 77 K < T < 300 K and frequency 50 < f < 10^6 Hz ranges displayed the predominance of an activation (hopping) conductance mechanism with dσ/ dT > 0 for the samples below the percolation threshold x_{C} ≈ 0.76 ± 0.05. Based on the earlier models for hopping AC conductance, computer simulation of the frequency coefficient α_{f} of hopping conductance depending on the probability of jump p, frequency f, and also on the shape of σ(f) curve was performed. The experimental and simulation results revealed a good agreement.
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Contributors
  • Lublin University of Technology, Nadbystrzycka 38a, 20-618 Lublin, Poland
author
  • Lublin University of Technology, Nadbystrzycka 38a, 20-618 Lublin, Poland
author
  • Scientific-Practical Material Research Centre NAS of Belarus, P. Brovki 19, 220072 Minsk, Belarus
author
  • Al-Balqa Applied University, P.O. Box 2041, Amman 11953, Jordan
author
  • Belarussian State University, Independence 4, 220030 Minsk, Belarus
References
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Document Type
Publication order reference
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YADDA identifier
bwmeta1.element.bwnjournal-article-appv120n109kz
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