Measurement and simulation of polarized neutron reflectivity and off-specular scattering from evolving magnetic domain structure in Co/Cu multilayers

Amitesh Paul; Emmanuel Kentzinger; Ulrich Rücker; Daniel E. Bürgler; Peter Grünberg

doi:10.1016/j.physb.2004.10.041

Measurement and simulation of polarized neutron reflectivity and off-specular scattering from evolving magnetic domain structure in Co/Cu multilayers

Amitesh Paul^*, Emmanuel Kentzinger, Ulrich Rücker, Daniel E. Bürgler, Peter Grünberg

^*Corresponding author for this work

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

4 Scopus citations

Abstract

We report on the measurement and simulation of the field-dependent polarized neutron reflectivity (specular) and scattering (off-specular) for an antiferromagnetically coupled Co/Cu multilayer (ML) with number of bilayers N=40. The first-order Bragg peak is visible in the non-spin flip (NSF) channels representing the bilayer periodicity. We observe off-specular intensity around the AF Bragg peak at the half-order position in both SF and NSF channels. These Bragg sheets are most intense at lower fields and gradually disappearing at higher fields as the system attains saturation. We attribute the Bragg sheets to vertically correlated AF domains along the ML stack which get bigger in size with field strength. Those interpretations are confirmed by simulation of the data within the distorted wave born approximation (DWBA).

Original language	English
Pages (from-to)	31-35
Number of pages	5
Journal	Physica B: Condensed Matter
Volume	356
Issue number	1-4 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physb.2004.10.041
State	Published - 15 Feb 2005
Externally published	Yes

Keywords

Magnetization reversal mechanisms
Off-specular scattering
Polarized neutron reflectometry

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10.1016/j.physb.2004.10.041

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title = "Measurement and simulation of polarized neutron reflectivity and off-specular scattering from evolving magnetic domain structure in Co/Cu multilayers",

abstract = "We report on the measurement and simulation of the field-dependent polarized neutron reflectivity (specular) and scattering (off-specular) for an antiferromagnetically coupled Co/Cu multilayer (ML) with number of bilayers N=40. The first-order Bragg peak is visible in the non-spin flip (NSF) channels representing the bilayer periodicity. We observe off-specular intensity around the AF Bragg peak at the half-order position in both SF and NSF channels. These Bragg sheets are most intense at lower fields and gradually disappearing at higher fields as the system attains saturation. We attribute the Bragg sheets to vertically correlated AF domains along the ML stack which get bigger in size with field strength. Those interpretations are confirmed by simulation of the data within the distorted wave born approximation (DWBA).",

keywords = "Magnetization reversal mechanisms, Off-specular scattering, Polarized neutron reflectometry",

author = "Amitesh Paul and Emmanuel Kentzinger and Ulrich R{\"u}cker and B{\"u}rgler, {Daniel E.} and Peter Gr{\"u}nberg",

year = "2005",

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doi = "10.1016/j.physb.2004.10.041",

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TY - JOUR

T1 - Measurement and simulation of polarized neutron reflectivity and off-specular scattering from evolving magnetic domain structure in Co/Cu multilayers

AU - Paul, Amitesh

AU - Kentzinger, Emmanuel

AU - Rücker, Ulrich

AU - Bürgler, Daniel E.

AU - Grünberg, Peter

PY - 2005/2/15

Y1 - 2005/2/15

N2 - We report on the measurement and simulation of the field-dependent polarized neutron reflectivity (specular) and scattering (off-specular) for an antiferromagnetically coupled Co/Cu multilayer (ML) with number of bilayers N=40. The first-order Bragg peak is visible in the non-spin flip (NSF) channels representing the bilayer periodicity. We observe off-specular intensity around the AF Bragg peak at the half-order position in both SF and NSF channels. These Bragg sheets are most intense at lower fields and gradually disappearing at higher fields as the system attains saturation. We attribute the Bragg sheets to vertically correlated AF domains along the ML stack which get bigger in size with field strength. Those interpretations are confirmed by simulation of the data within the distorted wave born approximation (DWBA).

AB - We report on the measurement and simulation of the field-dependent polarized neutron reflectivity (specular) and scattering (off-specular) for an antiferromagnetically coupled Co/Cu multilayer (ML) with number of bilayers N=40. The first-order Bragg peak is visible in the non-spin flip (NSF) channels representing the bilayer periodicity. We observe off-specular intensity around the AF Bragg peak at the half-order position in both SF and NSF channels. These Bragg sheets are most intense at lower fields and gradually disappearing at higher fields as the system attains saturation. We attribute the Bragg sheets to vertically correlated AF domains along the ML stack which get bigger in size with field strength. Those interpretations are confirmed by simulation of the data within the distorted wave born approximation (DWBA).

KW - Magnetization reversal mechanisms

KW - Off-specular scattering

KW - Polarized neutron reflectometry

UR - http://www.scopus.com/inward/record.url?scp=13444251411&partnerID=8YFLogxK

U2 - 10.1016/j.physb.2004.10.041

DO - 10.1016/j.physb.2004.10.041

M3 - 文章

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SN - 0921-4526

VL - 356

SP - 31

EP - 35

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - 1-4 SPEC. ISS.

ER -

Measurement and simulation of polarized neutron reflectivity and off-specular scattering from evolving magnetic domain structure in Co/Cu multilayers

Abstract

Keywords

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