Indian Science Technology and Engineering facilities Map
 
Supplier Map
Service Map

Publications

Publication Details

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:
Physics Head on 2020-08-02 
 
THE VISION
THE MISSION
ABOUT I-STEM
It has always been the basic tenet of the Government of India, in generously funding R&D efforts at academic institutions over the years, that facilities established through such support be made available to those needing them and qualified to make use of them for their own research work
read more >>

However, this was never easy or straightforward for, among other reasons, there was no ready source of information of what facility was available and where. Thanks to the Web, it is much easier today to have a national and regional “inventory of resources”, so as to match users with the resources they need, and to do all this in an efficient and transparent manner.

This can lead to a leap in R&D productivity and greatly enhance the effectiveness of public investment. This is the motivation behind I-STEM.
read less <<
Visitor Hit Counter
Hosted at Indian Institute of Science
Copyright © 2024 I-STEM. All rights reserved.
Audited by: STQC Bengaluru.