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Applicant:
Indian Institute of Technology (IIT) Patna 
Author:
S. Supriya, S. Kumar and M. Kar 
Corresponding Authors:
Manoranjan Kar 
DOI #:
10.1007/s11664-017-5729-9 
Title:
Electrical Properties and Dipole Relaxation Behavior of Zinc Substituted Cobalt Ferrite 
Journal:
Journal of Electronic Materials  
Year:
2017 
Volume:
46 
Page:
6884–6894  
Keywords:
Cobalt ferrite, XRD, dielectric relaxation, impedance 
Abstract:
Co1−x Zn x Fe2O4 ceramics with x = 0.00, 0.05, 0.10, 0.15 and 0.20 were synthesized by a modified citric acid sol–gel method. The crystalline phase of the samples was characterized by the powder x-ray diffraction technique (XRD) and the Rietveld analysis of the XRD patterns. The morphology and particle size were studied using field emission scanning electron microscopy. Fourier transform infrared spectroscopy studies were consistent with the XRD results. The impedance measurements were carried out from 100 Hz to 10 MHz at different temperatures from 40°C to 300°C. The frequency dispersion of dielectric was analyzed with a modified Debye equation. The activation energy derived from the dielectric constant and the impedance follows the Arrhenius law and are comparable with each other. The dielectric relaxation and impedance relaxation are correlated in terms of activation energy, show a good temperature stability of the dielectrics and are useful for their applications in microelectronic devices such as filters, capacitors, resonators, etc. 
Entered by:
Venkata Dantham on 2020-08-02 
 
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