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- Title
Dielectric properties of CdS nanoparticles synthesized by soft chemical route.
- Authors
Tripathi, R.; Kumar, A.; Sinha, T. P.
- 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 (ϵ′ and ϵ″) 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.
- Subjects
CADMIUM sulfide; PERMITTIVITY; DIELECTRICS; DISPERSION (Chemistry); CHEMICAL reactions; NANOPARTICLES
- Publication
Journal of Chemical Sciences, 2009, Vol 121, Issue 3, p969
- ISSN
0974-3626
- Publication type
Article