Reversal mechanism of submicron patterned CoNi/Pt multilayers

M.A.M. Haast; J.R. Schuurhuis; J.R. Schuurhuis; Leon Abelmann; J.C. Lodder; T.J.A. Popma

doi:10.1109/20.706339

Reversal mechanism of submicron patterned CoNi/Pt multilayers

M.A.M. Haast, J.R. Schuurhuis, J.R. Schuurhuis, Leon Abelmann, J.C. Lodder, T.J.A. Popma

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Abstract

With laser interference lithography Co50Ni50/Pt multilayers with perpendicular magnetic anisotropy have been patterned into regular matrices of submicron sized dots. Their magnetic properties have been studied with Vibrating Sample Magnetometry. Compared to continuous multilayers (Hc=15 kA/m) the coercivity for the patterned multilayers is much larger (Hc=115-270 kA/m). Though the hysteresis curves of 180 nm dots and 60 nm dots have identical shapes, virgin curves seem to indicate that the 180 nm dots are multidomain while the 60 nm dots are single domain. The latter has been confirmed with Magnetic Force Microscopy observations

Original language	Undefined
Pages (from-to)	1006-1008
Number of pages	8
Journal	IEEE transactions on magnetics
Volume	34
Issue number	4
DOIs	https://doi.org/10.1109/20.706339
Publication status	Published - 1998

Keywords

METIS-111937
IR-15036
EWI-5444
SMI-MAT: MATERIALS
SMI-TST: From 2006 in EWI-TST

Access to Document

10.1109/20.706339

00706339

http://eprints.eemcs.utwente.nl/secure2/5444/01/HAAST1998.PDF

Cite this

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title = "Reversal mechanism of submicron patterned CoNi/Pt multilayers",

abstract = "With laser interference lithography Co50Ni50/Pt multilayers with perpendicular magnetic anisotropy have been patterned into regular matrices of submicron sized dots. Their magnetic properties have been studied with Vibrating Sample Magnetometry. Compared to continuous multilayers (Hc=15 kA/m) the coercivity for the patterned multilayers is much larger (Hc=115-270 kA/m). Though the hysteresis curves of 180 nm dots and 60 nm dots have identical shapes, virgin curves seem to indicate that the 180 nm dots are multidomain while the 60 nm dots are single domain. The latter has been confirmed with Magnetic Force Microscopy observations",

keywords = "METIS-111937, IR-15036, EWI-5444, SMI-MAT: MATERIALS, SMI-TST: From 2006 in EWI-TST",

author = "M.A.M. Haast and J.R. Schuurhuis and J.R. Schuurhuis and Leon Abelmann and J.C. Lodder and T.J.A. Popma",

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TY - JOUR

T1 - Reversal mechanism of submicron patterned CoNi/Pt multilayers

AU - Haast, M.A.M.

AU - Schuurhuis, J.R.

AU - Abelmann, Leon

AU - Lodder, J.C.

AU - Popma, T.J.A.

N1 - Imported from SMI Reference manager

PY - 1998

Y1 - 1998

N2 - With laser interference lithography Co50Ni50/Pt multilayers with perpendicular magnetic anisotropy have been patterned into regular matrices of submicron sized dots. Their magnetic properties have been studied with Vibrating Sample Magnetometry. Compared to continuous multilayers (Hc=15 kA/m) the coercivity for the patterned multilayers is much larger (Hc=115-270 kA/m). Though the hysteresis curves of 180 nm dots and 60 nm dots have identical shapes, virgin curves seem to indicate that the 180 nm dots are multidomain while the 60 nm dots are single domain. The latter has been confirmed with Magnetic Force Microscopy observations

AB - With laser interference lithography Co50Ni50/Pt multilayers with perpendicular magnetic anisotropy have been patterned into regular matrices of submicron sized dots. Their magnetic properties have been studied with Vibrating Sample Magnetometry. Compared to continuous multilayers (Hc=15 kA/m) the coercivity for the patterned multilayers is much larger (Hc=115-270 kA/m). Though the hysteresis curves of 180 nm dots and 60 nm dots have identical shapes, virgin curves seem to indicate that the 180 nm dots are multidomain while the 60 nm dots are single domain. The latter has been confirmed with Magnetic Force Microscopy observations

KW - METIS-111937

KW - IR-15036

KW - EWI-5444

KW - SMI-MAT: MATERIALS

KW - SMI-TST: From 2006 in EWI-TST

U2 - 10.1109/20.706339

DO - 10.1109/20.706339

M3 - Article

SN - 0018-9464

VL - 34

SP - 1006

EP - 1008

JO - IEEE transactions on magnetics

JF - IEEE transactions on magnetics

IS - 4

ER -