Tracking the evolution of magnetic ordering in Co/Ru multilayers with inhomogeneous interlayer coupling using polarised neutron reflectometry

J. A. Gonzalez; L. A. Michez; T. R. Charlton; B. J. Hickey; S. Langridge; C. H. Marrows

doi:10.1016/j.physb.2011.03.083

Tracking the evolution of magnetic ordering in Co/Ru multilayers with inhomogeneous interlayer coupling using polarised neutron reflectometry

J. A. Gonzalez, L. A. Michez, T. R. Charlton, B. J. Hickey, S. Langridge, C. H. Marrows

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

Abstract

We report the measurement of reflected neutron intensity hysteresis loops from Co/Ru multilayers that have both antiferromagnetically and ferromagnetically coupled regions. We show that by measuring the four neutron spin-resolved reflectivities at a particular value of wavevector transfer, the normalised value of the relevant magnetic order parameter may be determined. The response of that order parameter to an applied magnetic field may hence be tracked. We have benchmarked our results against conventional magnetometry and magnetotransport measurements.

Original language	English
Pages (from-to)	2689-2696
Number of pages	8
Journal	Physica B: Physics of Condensed Matter
Volume	406
Issue number	13
DOIs	https://doi.org/10.1016/j.physb.2011.03.083
State	Published - Jul 1 2011
Externally published	Yes

Funding

We would like to thank the Institut Laue Langevin for the provision of beamtime, Max Wolff for beamline support, and the EPSRC for financial support.

Funders	Funder number
Institut Laue Langevin
Engineering and Physical Sciences Research Council

Keywords

Hysteresis loop
Magnetic multilayer
Polarised neutron scattering

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10.1016/j.physb.2011.03.083

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title = "Tracking the evolution of magnetic ordering in Co/Ru multilayers with inhomogeneous interlayer coupling using polarised neutron reflectometry",

abstract = "We report the measurement of reflected neutron intensity hysteresis loops from Co/Ru multilayers that have both antiferromagnetically and ferromagnetically coupled regions. We show that by measuring the four neutron spin-resolved reflectivities at a particular value of wavevector transfer, the normalised value of the relevant magnetic order parameter may be determined. The response of that order parameter to an applied magnetic field may hence be tracked. We have benchmarked our results against conventional magnetometry and magnetotransport measurements.",

keywords = "Hysteresis loop, Magnetic multilayer, Polarised neutron scattering",

author = "Gonzalez, {J. A.} and Michez, {L. A.} and Charlton, {T. R.} and Hickey, {B. J.} and S. Langridge and Marrows, {C. H.}",

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AU - Gonzalez, J. A.

AU - Michez, L. A.

AU - Charlton, T. R.

AU - Hickey, B. J.

AU - Langridge, S.

AU - Marrows, C. H.

PY - 2011/7/1

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N2 - We report the measurement of reflected neutron intensity hysteresis loops from Co/Ru multilayers that have both antiferromagnetically and ferromagnetically coupled regions. We show that by measuring the four neutron spin-resolved reflectivities at a particular value of wavevector transfer, the normalised value of the relevant magnetic order parameter may be determined. The response of that order parameter to an applied magnetic field may hence be tracked. We have benchmarked our results against conventional magnetometry and magnetotransport measurements.

AB - We report the measurement of reflected neutron intensity hysteresis loops from Co/Ru multilayers that have both antiferromagnetically and ferromagnetically coupled regions. We show that by measuring the four neutron spin-resolved reflectivities at a particular value of wavevector transfer, the normalised value of the relevant magnetic order parameter may be determined. The response of that order parameter to an applied magnetic field may hence be tracked. We have benchmarked our results against conventional magnetometry and magnetotransport measurements.

KW - Hysteresis loop

KW - Magnetic multilayer

KW - Polarised neutron scattering

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JF - Physica B: Physics of Condensed Matter

IS - 13

ER -

Tracking the evolution of magnetic ordering in Co/Ru multilayers with inhomogeneous interlayer coupling using polarised neutron reflectometry

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