TU Darmstadt / ULB / TUbiblio

Dependence of coercivity on length ratios in sub-micron Nd2Fe14B particles with rectangular prism shape

Thielsch, J. and Suess, D. and Schultz, L. and Gutfleisch, O. (2013):
Dependence of coercivity on length ratios in sub-micron Nd2Fe14B particles with rectangular prism shape.
In: Journal of Applied Physics, AIP Publishing LLC, p. 223909, 114, (22), ISSN 00218979,
[Online-Edition: http://dx.doi.org/10.1063/1.4846795],
[Article]

Abstract

Demagnetization curves of sub-micron Nd2Fe14B particles with rectangular prism shapes were simulated by micromagnetic simulations. Coercivity decreases with increasing particle thickness for same particle volumes. This unexpected behavior can be explained by different resulting angles of the total effective field when superimposing the applied field vector with the stray field vector at the point of the first reversal event. The angular dependence of the nucleation field follows a Stoner-Wohlfarth like behavior.

Item Type: Article
Erschienen: 2013
Creators: Thielsch, J. and Suess, D. and Schultz, L. and Gutfleisch, O.
Title: Dependence of coercivity on length ratios in sub-micron Nd2Fe14B particles with rectangular prism shape
Language: English
Abstract:

Demagnetization curves of sub-micron Nd2Fe14B particles with rectangular prism shapes were simulated by micromagnetic simulations. Coercivity decreases with increasing particle thickness for same particle volumes. This unexpected behavior can be explained by different resulting angles of the total effective field when superimposing the applied field vector with the stray field vector at the point of the first reversal event. The angular dependence of the nucleation field follows a Stoner-Wohlfarth like behavior.

Journal or Publication Title: Journal of Applied Physics
Volume: 114
Number: 22
Publisher: AIP Publishing LLC
Uncontrolled Keywords: boron alloys, coercive force, demagnetisation, iron alloys, magnetic particles, neodymium alloys, nucleation
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Functional Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 10 Mar 2014 10:10
Official URL: http://dx.doi.org/10.1063/1.4846795
Identification Number: doi:10.1063/1.4846795
Funders: D.S. acknowledges the financial support from the Austrian Federal Ministry of Economy, Family and Youth and the National Foundation for Research, Technology and Development as well as the Austrian Science Fund FWF, Project SFB-ViCoM, F4112-N13.
Export:

Optionen (nur für Redakteure)

View Item View Item