Article (Scientific journals)
Towards understanding of magnetization reversal in Nd-Fe-B nanocomposites: analysis by high-throughput micromagnetic simulations
Erokhin, S.; Berkov, D.; Ito, M. et al.
2018In Journal of Physics: Condensed Matter, 30, p. 125802
Peer Reviewed verified by ORBi
 

Files


Full Text
Erokhin_2018_J._Phys.__Condens._Matter_30_125802.pdf
Publisher postprint (1.83 MB)
Download

All documents in ORBilu are protected by a user license.

Send to



Details



Keywords :
micromagnetics; permanent magnets; coercivity
Abstract :
[en] We demonstrate how micromagnetic simulations can be employed in order to characterize and analyze the magnetic microstructure of nanocomposites. For the example of nanocrystalline Nd-Fe-B, which is a potential material for future permanent-magnet applications, we have compared three different models for the micromagnetic analysis of this material class: (i) a description of the nanocomposite microstructure in terms of Stoner-Wohlfarth particles with and without the magnetodipolar interaction; (ii) a model based on the core-shell representation of the nanograins; (iii) the latter model including a contribution of superparamagnetic clusters. The relevant parameter spaces have been systematically scanned with the aim to establish which micromagnetic approach can most adequately describe experimental data for this material. According to our results, only the last, most sophisticated model is able to provide an excellent agreement with the measured hysteresis loop. The presented methodology is generally applicable to multiphase magnetic nanocomposites and it highligths the complex interrelationship between the microstructure, magnetic interactions, and the macroscopic magnetic properties.
Disciplines :
Physics
Author, co-author :
Erokhin, S.
Berkov, D.
Ito, M.
Kato, A.
Michels, Andreas  ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
External co-authors :
yes
Language :
English
Title :
Towards understanding of magnetization reversal in Nd-Fe-B nanocomposites: analysis by high-throughput micromagnetic simulations
Publication date :
2018
Journal title :
Journal of Physics: Condensed Matter
ISSN :
1361-648X
Publisher :
Institute of Physics, Bristol, United Kingdom
Volume :
30
Pages :
125802
Peer reviewed :
Peer Reviewed verified by ORBi
Focus Area :
Computational Sciences
FnR Project :
FNR7489208 - Experimental Sans Studies And Micromagnetic Simulations Of Neutron Scattering On Polycrystalline Magnetic Materials, Sans_Micmag2, 2012 (01/06/2014-31/05/2017) - Andreas Michels
Available on ORBilu :
since 27 February 2018

Statistics


Number of views
80 (5 by Unilu)
Number of downloads
135 (1 by Unilu)

Scopus citations®
 
8
Scopus citations®
without self-citations
1
WoS citations
 
7

Bibliography


Similar publications



Contact ORBilu