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Dielectric properties of CdS nanoparticles synthesized by soft chemical route

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Abstract

CdS nanoparticles have been synthesized by a chemical reaction route using thiophenol as a capping agent. The frequency-dependent dielectric dispersion of cadmium sulphide (CdS) is investigated in the temperature range of 303-413 K and in a frequency range of 50 Hz-1 MHz by impedance spectroscopy. An analysis of the complex permittivity (ɛ′ and ɛ″) and loss tangent (tan δ) with frequency is performed by assuming a distribution of relaxation times. The scaling behaviour of dielectric loss spectra suggests that the relaxation describes the same mechanism at various temperatures. The frequency-dependent electrical data are analysed in the framework of conductivity and modulus formalisms. The frequency-dependent conductivity spectra obey the power law.

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Authors and Affiliations

  1. Department of Physics, Government Post Graduate College, Rishikesh, 249 201, India

    R. Tripathi & A. Kumar

  2. Department of Physics, Bose Institute, 93/1, A.P.C. Road, Kolkata, 700 009, India

    T. P. Sinha

Authors
  1. R. Tripathi
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  2. A. Kumar
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  3. T. P. Sinha
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Correspondence to A. Kumar.

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Tripathi, R., Kumar, A. & Sinha, T.P. Dielectric properties of CdS nanoparticles synthesized by soft chemical route. Pramana - J Phys 72, 969–978 (2009). https://doi.org/10.1007/s12043-009-0089-5

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  • DOI: https://doi.org/10.1007/s12043-009-0089-5

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