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Applicant:
Indian Institute of Technology (IIT) Patna 
Author:
S. Kumar, S. Guha, S. Supriya, L. K. Pradhan, M. Kar 
Corresponding Authors:
M. Kar 
DOI #:
https://doi.org/10.1016/j.jmmm.2019.166213 
Title:
Correlation between crystal structure parameters with magnetic and dielectric parameters of Cu-doped barium hexaferrite 
Journal:
Journal of Magnetism and Magnetic Materials 
Year:
2020 
Volume:
499 
Page:
166213 
Keywords:
Lattice strain, Dipole relaxation, Activation energy, LA to saturation, Barium hexaferrite 
Abstract:
Copper (Cu) doped barium hexaferrite BaFe12−xCuxO19, (x = 0.0–2.0) were synthesized by the modified citratesol-gel method. The structural, magnetic and electric properties have been investigated. All samples are crys-tallized to M-type hexagonal structure withP63/mmcspace group. Lattice parameters are found to be maximumfor x = 1.0, which has been correlated with the physical properties (magnetic & dielectric) of the material. Theparticle size distribution (found to be nm order) and surface morphology were analyzed by the FESEM (FieldEmission Scanning Electron Microscopy) technique. The magnetic hysteresis (M-H) loops have been analyzed byemploying the“Law of approach to saturation”and, important magnetic parameters are obtained. The saturationmagnetization and magnetocrystalline anisotropy constants are found to be maximum for x = 1.0 sample, butthe coercivefield is found to a minimum for the same sample. The modified Debye equation has been employedto understand the impedance response to the frequency. The activation energy was obtained by using theArrhenius equation. Hence, a correlation between crystal structure parameters and physical (magnetic and di-electric) properties of nano-crystalline Cu-doped barium hexaferrite has been observed. Finally, a correlationbetween crystal structure parameters and magnetic properties, as well as electrical properties, has been proposedfor the Cu doped BHF. 
Entered by:
Venkata Dantham on 2020-08-02 
 
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