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Effect of Fe alloying on the structural, optical, electrical and magnetic properties of spray-deposited CuO thin films

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Abstract

Pure CuO and CuO:Fe (10%) thin films were spray deposited on glass, silicon and quartz substrates at 500 °C. XRD patterns confirmed a monoclinic structure with cubic CuFe2O4 impurities. Surface morphology smoothed out on doping with Fe. The direct and the indirect band gaps of pure CuO and CuO:Fe (10%) films estimated from the spectral transmittance data indicated blue and red shifts respectively. X-ray photoelectron spectroscopy revealed the charge states of the elements. The activation energy for conduction was reduced on doping with Fe as estimated from an Arrhenius plot of the temperature-dependent resistivity. The magnetization of the CuO:Fe (10%) films at 300 K showed a hysteresis behavior with large coercivity. The large variation in the coercivity of the films due to pinned-type magnetic behavior may be useful for multilayer switching device applications.

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Authors and Affiliations

  1. Materials Science Center, Department of Nuclear Physics, University of Madras, Guindy Campus, Chennai, 600 025, India

    D. Paul Joseph & C. Venkateswaran

  2. Department of Physics, Pukyong National University, Busan, 608-737, Korea

    S. Sambasivam & Byung Chun Choi

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  1. D. Paul Joseph
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  2. C. Venkateswaran
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  3. S. Sambasivam
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  4. Byung Chun Choi
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Correspondence to C. Venkateswaran.

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Paul Joseph, D., Venkateswaran, C., Sambasivam, S. et al. Effect of Fe alloying on the structural, optical, electrical and magnetic properties of spray-deposited CuO thin films. Journal of the Korean Physical Society 61, 449–454 (2012). https://doi.org/10.3938/jkps.61.449

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