10.1186/2228-5326-2-12

Influence of temperature on AC conductivity of nanocrystalline CuAlO2

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  • T Prakash*1,
  1. Department of Medical Bionanotechnology, Chettinad Hospital and Research Institute, Kelambakkam, Tamilnadu, 603103, IN
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Published in Issue 2012-07-09

How to Cite

Prakash, T. (2012). Influence of temperature on AC conductivity of nanocrystalline CuAlO2. International Nano Letters, 2(1 (December 2012). https://doi.org/10.1186/2228-5326-2-12
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Abstract

Abstract Nanocrystalline CuAlO 2 was synthesized by mechanical alloying of Cu 2 O and α-Al 2 O 3 powders in the molar ratio of 1:1 for 20 h in toluene medium with tungsten carbide balls and vials using planetary ball mill. The ball milling was carried out at 300 rpm with a ball to powder weight ratio of 10:1 and then annealed at 1373 K in a platinum crucible for 20 h to get CuAlO 2 phase with average crystallite size 45 nm. Complex impedance spectroscopic measurement in the frequency region 1 Hz to 10 MHz between the temperatures 333 to 473 K was carried out for nanocrystalline CuAlO 2 sample. The obtained complex impedance data was analyzed for AC conductivities, DC and AC conductivities correlations and crossover frequencies ( f co ). The BNN (Barton, Nakajima and Namikawa) relation was applied to understand the correlation between DC and AC conductivities. The observed experimental results were discussed in the paper.

Keywords

  • AC conductivity,
  • Impedance spectroscopy,
  • Transparent semiconductors
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References

  1. Wager et al. (2008) Springer
  2. Kawazoe et al. (1997) https://doi.org/10.1038/40087
  3. Gao et al. (2003) https://doi.org/10.1088/0957-4484/14/5/310
  4. Banerjee and Chattopadhay (2005) https://doi.org/10.1063/1.1866485
  5. Prakash et al. (2008) https://doi.org/10.1166/jnn.2008.AN23
  6. Prakash et al. (2007) https://doi.org/10.1063/1.2815633
  7. Namikawa (1975) https://doi.org/10.1016/0022-3093(75)90019-8
  8. Chandra Bose et al. (2003) https://doi.org/10.1016/S0022-3697(02)00368-2