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Title: Influence of lateral geometry on magnetoresistance and magnetization reversal in Ni{sub 80}Fe{sub 20} wires

Abstract

The magnetization reversal processes and magnetoresistance behavior in micron-sized Ni{sub 80}Fe{sub 20} wires with triangular and rectangular modulated width have been studied. The wires were fabricated by electron beam lithography and a lift-off process. A combination of magnetic force microscopy (MFM), magneto-optical Kerr effect (MOKE) and magnetoresistance (MR) measurements shows that the lateral geometry of the wires greatly influences the magnetic and transport properties. The width modulations modify not only the shape-dependent demagnetizing fields, but also the current density. The correlation between the lateral geometry, the magnetic and the transport properties is discussed based on MFM, MOKE and MR results.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Univ. of Cambridge (GB)
OSTI Identifier:
20000660
Resource Type:
Journal Article
Journal Name:
IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)
Additional Journal Information:
Journal Volume: 35; Journal Issue: 5Pt1; Conference: 1999 international magnetics conference (Intermag '99), Kyongju (KR), 05/18/1999--05/21/1999; Other Information: PBD: Sep 1999; Journal ID: ISSN 0018-9464
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; NICKEL BASE ALLOYS; IRON ALLOYS; MAGNETORESISTANCE; MAGNETIZATION; WIRES; GEOMETRY; MAGNETIC PROPERTIES

Citation Formats

Yao, C.C., Hasko, D.G., Lee, W.Y., Hirohata, A., Xu, Y.B., and Bland, J.A.C. Influence of lateral geometry on magnetoresistance and magnetization reversal in Ni{sub 80}Fe{sub 20} wires. United States: N. p., 1999. Web. doi:10.1109/20.801007.
Yao, C.C., Hasko, D.G., Lee, W.Y., Hirohata, A., Xu, Y.B., & Bland, J.A.C. Influence of lateral geometry on magnetoresistance and magnetization reversal in Ni{sub 80}Fe{sub 20} wires. United States. doi:10.1109/20.801007.
Yao, C.C., Hasko, D.G., Lee, W.Y., Hirohata, A., Xu, Y.B., and Bland, J.A.C. Wed . "Influence of lateral geometry on magnetoresistance and magnetization reversal in Ni{sub 80}Fe{sub 20} wires". United States. doi:10.1109/20.801007.
@article{osti_20000660,
title = {Influence of lateral geometry on magnetoresistance and magnetization reversal in Ni{sub 80}Fe{sub 20} wires},
author = {Yao, C.C. and Hasko, D.G. and Lee, W.Y. and Hirohata, A. and Xu, Y.B. and Bland, J.A.C.},
abstractNote = {The magnetization reversal processes and magnetoresistance behavior in micron-sized Ni{sub 80}Fe{sub 20} wires with triangular and rectangular modulated width have been studied. The wires were fabricated by electron beam lithography and a lift-off process. A combination of magnetic force microscopy (MFM), magneto-optical Kerr effect (MOKE) and magnetoresistance (MR) measurements shows that the lateral geometry of the wires greatly influences the magnetic and transport properties. The width modulations modify not only the shape-dependent demagnetizing fields, but also the current density. The correlation between the lateral geometry, the magnetic and the transport properties is discussed based on MFM, MOKE and MR results.},
doi = {10.1109/20.801007},
journal = {IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)},
issn = {0018-9464},
number = 5Pt1,
volume = 35,
place = {United States},
year = {1999},
month = {9}
}