Irreversible magnetization process and switching mechanism in L10 FePt thin films

A. Lisfi; S. Pokharel; O. Akioya; N. H. Alqhtany; M. Wuttig

doi:10.1063/1.4973759

AIP Advances (May 2017)

Irreversible magnetization process and switching mechanism in L10 FePt thin films

A. Lisfi,
S. Pokharel,
O. Akioya,
N. H. Alqhtany,
M. Wuttig

Affiliations

A. Lisfi: Department of Physics, Morgan State University, Baltimore, Maryland 21251, USA
S. Pokharel: Department of Physics, Morgan State University, Baltimore, Maryland 21251, USA
O. Akioya: Department of Physics, Morgan State University, Baltimore, Maryland 21251, USA
N. H. Alqhtany: Department of Physics, Morgan State University, Baltimore, Maryland 21251, USA
M. Wuttig: Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, USA

DOI: https://doi.org/10.1063/1.4973759
Journal volume & issue: Vol. 7, no. 5
pp. 056206 – 056206-8

Abstract

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The irreversible characteristics of the magnetization and the switching mechanism have been investigated in granular FePt films with L10 phase prepared by sputtering on a polymer substrate. The films display an extremely large magnetic anisotropy with a random distribution of the magnetization easy axis. The magnetic instabilities and the irreversible magnetization are found to be controlled by domain wall, which is responsible for the magnetization reversal. Through remanence curves and ΔM plot, the nature of magnetic interactions was revealed to be positive exchange coupling.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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