AC conductivity of (FeCoZr)x(PZT)(100-x) nanocomposites produced in vacuum chamber

Oleksandr Boiko; Vitalii Bondariev; Karolina Czarnacka

doi:10.1117/12.2205849

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11 September 2015 AC conductivity of (FeCoZr)_x(PZT)_(100-x) nanocomposites produced in vacuum chamber

Oleksandr Boiko, Vitalii Bondariev, Karolina Czarnacka

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Proceedings Volume 9662, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2015; 96624K (2015) https://doi.org/10.1117/12.2205849
Event: XXXVI Symposium on Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments (Wilga 2015), 2015, Wilga, Poland

Abstract

In this work, the temperature and frequency dependences of conductivity σ and Arrhenius plots of annealed nanocomposite films containing Fe₄₅Co₄₅Zr₁₀ - based nanoparticles embedded in a doped PbZrTiO₃ ferroelectric matrix were studied. The nanocomposites studied were deposited by sputtering with use of argon and oxygen ions in a vacuum chamber. Tested samples were followed by a 15-min annealing process in air in the temperature range of 398 K ≤ T_a ≤ 748 K with steps of 25 K. The σ(f,T) dependences of nanocomposite samples was measured in ambient temperature range of 77 K < T_p < 373 K at frequencies of 50 Hz < f < 1MHz. It was established that nanocomposite sample with metallic phase content x = 55.6 at.% demonstrates strong temperature and frequency dependences, which is typical for a percolation systems. Type of conduction in such nanostructure is defined as dielectric, which may be related with the additional oxidation of metallic nanoparticles during the annealing process. For the tested sample with x = 88.4 at.%. we observe metallic type of conduction, when metallic nanoparticles form a permanent conductive channels in dielectric matrix.

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Oleksandr Boiko, Vitalii Bondariev, and Karolina Czarnacka "AC conductivity of (FeCoZr)_x(PZT)_(100-x) nanocomposites produced in vacuum chamber", Proc. SPIE 9662, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2015, 96624K (11 September 2015); https://doi.org/10.1117/12.2205849

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