Magnetization reversal and magnetic anisotropy in Co network nanostructures

W. Zhang; A. Hirohata; W.Y. Lee; H.T. Leung; Y.B. Xu; C.C. Yao; B.C. Choi; D.G. Hasko; J.A.C. Bland

doi:10.1109/20.800562

Magnetization reversal and magnetic anisotropy in Co network nanostructures

W. Zhang, A. Hirohata, W.Y. Lee, H.T. Leung, Y.B. Xu, C.C. Yao, B.C. Choi, D.G. Hasko, J.A.C. Bland

Electronic Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

The magnetization reversal and magnetic anisotropy in Co network structures have been studied using magneto-optic Kerr effect (MOKE). An enhancement of the coercivity is observed in the network structures and is attributed to the pinning of domain walls by the hole edges in the vicinity of which the demagnetizing field spatially varies. We find that the magnetization reversal process is dominated by the intrinsic unaxial anisotropy (2K(u)/M(s)approximate to 200 Oe) in spite of the shape anisotropy induced by the hole edges. The influence of the cross-junction on the competition between the intrinsic uniaxial anisotropy and the induced shape anisotropy is discussed using micromagnetic simulations.

Original language	English
Pages (from-to)	3475 -3477
Journal	IEEE Transactions on Magnetics
Volume	35
Issue number	5 (Part 2)
DOIs	https://doi.org/10.1109/20.800562
Publication status	Published - Sept 1999

Bibliographical note

© 1999 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

Keywords

coercivity
magnetic anisotropy
network structures

Access to Document

10.1109/20.800562

xuyb11.pdf

http://dx.doi.org/10.1109/20.800562

Cite this

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title = "Magnetization reversal and magnetic anisotropy in Co network nanostructures",

abstract = "The magnetization reversal and magnetic anisotropy in Co network structures have been studied using magneto-optic Kerr effect (MOKE). An enhancement of the coercivity is observed in the network structures and is attributed to the pinning of domain walls by the hole edges in the vicinity of which the demagnetizing field spatially varies. We find that the magnetization reversal process is dominated by the intrinsic unaxial anisotropy (2K(u)/M(s)approximate to 200 Oe) in spite of the shape anisotropy induced by the hole edges. The influence of the cross-junction on the competition between the intrinsic uniaxial anisotropy and the induced shape anisotropy is discussed using micromagnetic simulations.",

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T1 - Magnetization reversal and magnetic anisotropy in Co network nanostructures

AU - Zhang, W.

AU - Hirohata, A.

AU - Lee, W.Y.

AU - Leung, H.T.

AU - Xu, Y.B.

AU - Yao, C.C.

AU - Choi, B.C.

AU - Hasko, D.G.

AU - Bland, J.A.C.

N1 - © 1999 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

PY - 1999/9

Y1 - 1999/9

N2 - The magnetization reversal and magnetic anisotropy in Co network structures have been studied using magneto-optic Kerr effect (MOKE). An enhancement of the coercivity is observed in the network structures and is attributed to the pinning of domain walls by the hole edges in the vicinity of which the demagnetizing field spatially varies. We find that the magnetization reversal process is dominated by the intrinsic unaxial anisotropy (2K(u)/M(s)approximate to 200 Oe) in spite of the shape anisotropy induced by the hole edges. The influence of the cross-junction on the competition between the intrinsic uniaxial anisotropy and the induced shape anisotropy is discussed using micromagnetic simulations.

AB - The magnetization reversal and magnetic anisotropy in Co network structures have been studied using magneto-optic Kerr effect (MOKE). An enhancement of the coercivity is observed in the network structures and is attributed to the pinning of domain walls by the hole edges in the vicinity of which the demagnetizing field spatially varies. We find that the magnetization reversal process is dominated by the intrinsic unaxial anisotropy (2K(u)/M(s)approximate to 200 Oe) in spite of the shape anisotropy induced by the hole edges. The influence of the cross-junction on the competition between the intrinsic uniaxial anisotropy and the induced shape anisotropy is discussed using micromagnetic simulations.

KW - coercivity

KW - magnetic anisotropy

KW - network structures

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