Indian Science Technology and Engineering facilities Map
 
Supplier Map
Service Map

Publications

Publication Details

Applicant:
Indian Institute of Technology (IIT) Patna 
Author:
S. Kumar, M. K. Manglam, S. Supriya, H. K. Satyapal, R. K Singh and M. Kar 
Corresponding Authors:
Manoranjan Kar 
DOI #:
Doi https://doi.org/10.1016/j.jmmm.2018.10.085 
Title:
Lattice strain mediated dielectric and magnetic properties in La doped barium hexaferrite 
Journal:
Journal of Magnetism and Magnetic Materials 
Year:
2019 
Volume:
473 
Page:
312-319 
Keywords:
XRD, Dielectric constant, Lattice strain, LA to saturation method, Magnetocrystalline anisotropy 
Abstract:
The lanthanum (La3+) doped M-type barium hexaferrite (Ba1−xLaxFe12O19) with x = 0.0, 0.05, 0.10, 0.15, and 0.20 have been prepared by the sol-gel technique. The Rietveld refinement of X-ray diffraction (XRD) patterns reveals the crystallization of all the samples to hexagonal crystal symmetry with P63/mmc space group. Investigation of Raman spectra strongly supports the XRD pattern analysis. The average grain (particle) size is found to be above 300 nm. Both the saturation magnetization and magnetocrystalline anisotropy have been estimated by employing the “Law of Approach (LA) to Saturation magnetization”. Both the above parameters are found to be maximum for 10% La doped BaFe12O19. It could be due to the lattice strain mediated magnetism in barium hexaferrite. However, these magnetic parameters decrease with the increase in La doping beyond 10% (> x = 0.10) in barium hexaferrite. The dielectric permittivity gradually increases with the La concentration in the BHF. A correlation between dielectric constant with the lattice strain has been reported in La3+ doped barium hexaferrite. 
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.