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HomeJournal of Nano ResearchJournal of Nano Research Vol. 6Effect of Annealing on Dielectric Property in...

Effect of Annealing on Dielectric Property in Ni1-xCoxFe2O4 Nanoparticles Synthesized Using Albumen (egg white)

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Abstract:

The nano crystalline nickel-cobalt ferrite using albumen (egg white) is synthesized by thermal evaporation method and its dielectric behaviour is analyzed for different annealing temperatures. The dielectric property of the sample is measured using impedance analyzer in the frequency range 1-100 MHz. The variation of dielectric constant and dissipation factor under different frequency for the samples at different annealing temperature are analyzed. A steady dielectric constant is observed for the sample annealed at 500°C. The dielectric constant obtained for this sample is low and it is in the range of 18.9 to 6.9 for different frequencies. This low value of dielectric constant shows the less interfacial polarization due to high resistivity which may be to the presence of a few Fe2+ ions. It is observed that the dispersion in dielectric constant by varying the annealing temperature is producing an intended result. The presence of constituent phases in Ni1-xCoxFe2O4 is confirmed by X-Ray Diffraction. The particle size for Ni1-xCoxFe2O4 obtained from Scherrer equation is found to be is 30nm. The morphology, particle size and percentage composition of elements are measured by employing Transmission Electron Microscopy (TEM), Scanning Electron Microscopy (SEM) and Energy Dispersive X-Ray Analysis spectrum (EDX).

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Journal of Nano Research Vol. 6

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Periodical:

Journal of Nano Research (Volume 6)

Pages:

205-213

DOI:

https://doi.org/10.4028/www.scientific.net/JNanoR.6.205

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Online since:

June 2009

Authors:

S. Marutha Senthil, R. Jayaprakash, Sarabu Ramana Murthy, A.R. Phani, V.N. Singh, G. Govindaraj

Keywords:

Albumen, Dielectric Constant, Dissipation Factor, Egg White, Nanocrystalline, Thermal Expansion

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© 2009 Trans Tech Publications Ltd. All Rights Reserved

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