Magnetization reversal in an Fe film with an array of elliptical holes on a square lattice.

Journal Article · Wed Jan 01 04:00:00 EST 2003 · Phys. Rev. B

DOI:https://doi.org/10.1103/PhysRevB.67.024428· OSTI ID:949718

Guedes, I; Grimsditch, M; Metlushko, V; Vavassori, P; Camley, R; Ilic, B; Neuzil, P; Kumar, R

The reversal mechanism for the magnetization in an Fe film with an array of elliptical holes is investigated using the diffracted magneto-optic Kerr effect (D-MOKE) technique. D-MOKE results are obtained as a function of temperature and the angle between the applied magnetic field and an ellipse axis. The transverse and longitudinal magnetization components and minor magnetization loops are also explored in order to understand the reversal process. The experimental results are interpreted using micromagnetic simulations. The simulations account for the strong angular dependence of the hysteresis loops and provide a detailed picture of how the local magnetization evolves during reversal. The actual reversal process occurs neither by coherent rotation of domains nor by clear domain-wall motion: domain smearing appears to be a more suitable description of the phenomenon.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: SC; NSF; DOD; FOR
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 949718
• Report Number(s): ANL/MSD/JA-43651
• Journal Information: Phys. Rev. B, Journal Name: Phys. Rev. B Journal Issue: Jan. 1, 2003 Vol. 67; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
FILMS
HYSTERESIS
IRON
KERR EFFECT
MAGNETIC FIELDS
MAGNETIZATION
ROTATION