• Dielectric properties of CdS nanoparticles synthesized by soft chemical route

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      https://www.ias.ac.in/article/fulltext/pram/072/06/1

    • Keywords

       

      Cadmium sulphide; chemical synthesis; impedance spectroscopy; dielectric properties.

    • 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 ($\varepsilon'$ and $\varepsilon''$ ) and loss tangent ($\tan \delta) 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.

    • Author Affiliations

       

      R Tripathi1 A Kumar1 T P Sinha2

      1. Department of Physics, Government Post Graduate College, Rishikesh 249 201, India
      2. Department of Physics, Bose Institute, 93/1, A.P.C. Road, Kolkata 700 009, India
    • Dates

       
  • Pramana – Journal of Physics | News

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