Optical and Dielectric studies in zirconium(IV) tungstate nanoparticles prepared by chemical coprecipitation method

Subject Areas : Journal of the Iranian Chemical Research

Beena Bhaskaran ¹ , Manoj Sadanandan, ²

1 - Department of Chemistry, D. B College, Sasthamcotta, Kollam, Kerala, India
2 - Department of Chemistry, D. B College, Sasthamcotta, Kollam, Kerala, India

Received: 2011-10-01 Accepted : 2012-06-25 Published : 2012-06-20

Keywords: Zirconiun(IV)tungstate, AFM, Optical band gap, ac conductivity, dielectric constant,

Abstract :

Nanoparticles of zirconium(IV) tungstate are prepared by chemical co-precipitation method. Thecharacterizations have been carried out by TG/DTA, DSC, AFM, XRD, FTIR and UV-Vis spectrum. PLspectrum shows two emission bands at 350 nm and at 477 nm. The effects of frequency on the dielectricbehavior and ac electrical conductivity have been studied. The dielectric constant is found to be 119.43 at1MHz. The ac conductivity is 7.29x10-8S/cm.

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