Ordering in magnetic multilayers by off-specular neutron scattering

V. Lauter-Pasyuk; H. J. Lauter; B. Toperverg; L. Romashev; M. Milyaev; A. Petrenko; V. Aksenov; V. Ustinov

doi:10.1016/S0304-8853(02)01118-6

Ordering in magnetic multilayers by off-specular neutron scattering

V. Lauter-Pasyuk, H. J. Lauter, B. Toperverg, L. Romashev, M. Milyaev, A. Petrenko, V. Aksenov, V. Ustinov

Research output: Contribution to journal › Conference article › peer-review

10 Scopus citations

Abstract

The combination of specular reflection and off-specular scattering with polarized neutrons gives a unique detailed information on the lateral and transverse spin-configuration of a magnetic multilayer stack. We present the first direct experimental observation of a phenomenon predicted theoretically for antiferromagnetically coupled multilayers: the twisted ground-state configuration in an external magnetic field. This twisted configuration arises due to the reduced symmetry of magnetic moments of the end layers having only one neighbor. This fact can be established directly via the qualitative analysis of the line shape of the superstructure peaks on the specular line and the related off-specular Bragg sheet. Additional quantitative evaluation of both specular reflection and off-specular scattering allows one to deduce the layer-by-layer spin configuration through the multilayer stack, as well as within the plane of the layer. The presence of spin-flip off-specular scattering means that the layer magnetization is laterally not homogeneous but is decomposed into a set of domains. The distribution of magnetic moments within each domain, the domains size and their distributions are obtained.

Original language	English
Pages (from-to)	382-387
Number of pages	6
Journal	Journal of Magnetism and Magnetic Materials
Volume	258-259
DOIs	https://doi.org/10.1016/S0304-8853(02)01118-6
State	Published - Mar 2003
Externally published	Yes
Event	Second Moscow International Symposium on Magnetism (MISM) - Moscow, Russian Federation Duration: Jun 20 2001 → Jun 24 2001

Funding

The authors thank V. Leiner for assistance during the experiment and the BMBF (Grant No. 03DUOTU1/4), NATO (Grant No. PST.CLG.976169), RFBR (Grant No. 01-02-17119) and in part MST of RF for the financial support.

Funders	Funder number
MST of RF
North Atlantic Treaty Organization	PST.CLG.976169
Russian Foundation for Basic Research	01-02-17119
Bundesministerium für Bildung und Forschung	03DUOTU1/4

Keywords

Exchange coupling - non-collinear
Neutron reflection - polarized
Thin film - multilayers

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10.1016/S0304-8853(02)01118-6

Cite this

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title = "Ordering in magnetic multilayers by off-specular neutron scattering",

abstract = "The combination of specular reflection and off-specular scattering with polarized neutrons gives a unique detailed information on the lateral and transverse spin-configuration of a magnetic multilayer stack. We present the first direct experimental observation of a phenomenon predicted theoretically for antiferromagnetically coupled multilayers: the twisted ground-state configuration in an external magnetic field. This twisted configuration arises due to the reduced symmetry of magnetic moments of the end layers having only one neighbor. This fact can be established directly via the qualitative analysis of the line shape of the superstructure peaks on the specular line and the related off-specular Bragg sheet. Additional quantitative evaluation of both specular reflection and off-specular scattering allows one to deduce the layer-by-layer spin configuration through the multilayer stack, as well as within the plane of the layer. The presence of spin-flip off-specular scattering means that the layer magnetization is laterally not homogeneous but is decomposed into a set of domains. The distribution of magnetic moments within each domain, the domains size and their distributions are obtained.",

keywords = "Exchange coupling - non-collinear, Neutron reflection - polarized, Thin film - multilayers",

author = "V. Lauter-Pasyuk and Lauter, {H. J.} and B. Toperverg and L. Romashev and M. Milyaev and A. Petrenko and V. Aksenov and V. Ustinov",

year = "2003",

month = mar,

doi = "10.1016/S0304-8853(02)01118-6",

language = "English",

volume = "258-259",

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T1 - Ordering in magnetic multilayers by off-specular neutron scattering

AU - Lauter-Pasyuk, V.

AU - Lauter, H. J.

AU - Toperverg, B.

AU - Romashev, L.

AU - Milyaev, M.

AU - Petrenko, A.

AU - Aksenov, V.

AU - Ustinov, V.

PY - 2003/3

Y1 - 2003/3

N2 - The combination of specular reflection and off-specular scattering with polarized neutrons gives a unique detailed information on the lateral and transverse spin-configuration of a magnetic multilayer stack. We present the first direct experimental observation of a phenomenon predicted theoretically for antiferromagnetically coupled multilayers: the twisted ground-state configuration in an external magnetic field. This twisted configuration arises due to the reduced symmetry of magnetic moments of the end layers having only one neighbor. This fact can be established directly via the qualitative analysis of the line shape of the superstructure peaks on the specular line and the related off-specular Bragg sheet. Additional quantitative evaluation of both specular reflection and off-specular scattering allows one to deduce the layer-by-layer spin configuration through the multilayer stack, as well as within the plane of the layer. The presence of spin-flip off-specular scattering means that the layer magnetization is laterally not homogeneous but is decomposed into a set of domains. The distribution of magnetic moments within each domain, the domains size and their distributions are obtained.

AB - The combination of specular reflection and off-specular scattering with polarized neutrons gives a unique detailed information on the lateral and transverse spin-configuration of a magnetic multilayer stack. We present the first direct experimental observation of a phenomenon predicted theoretically for antiferromagnetically coupled multilayers: the twisted ground-state configuration in an external magnetic field. This twisted configuration arises due to the reduced symmetry of magnetic moments of the end layers having only one neighbor. This fact can be established directly via the qualitative analysis of the line shape of the superstructure peaks on the specular line and the related off-specular Bragg sheet. Additional quantitative evaluation of both specular reflection and off-specular scattering allows one to deduce the layer-by-layer spin configuration through the multilayer stack, as well as within the plane of the layer. The presence of spin-flip off-specular scattering means that the layer magnetization is laterally not homogeneous but is decomposed into a set of domains. The distribution of magnetic moments within each domain, the domains size and their distributions are obtained.

KW - Exchange coupling - non-collinear

KW - Neutron reflection - polarized

KW - Thin film - multilayers

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DO - 10.1016/S0304-8853(02)01118-6

M3 - Conference article

AN - SCOPUS:0037335599

SN - 0304-8853

VL - 258-259

SP - 382

EP - 387

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

T2 - Second Moscow International Symposium on Magnetism (MISM)

Y2 - 20 June 2001 through 24 June 2001

ER -

Ordering in magnetic multilayers by off-specular neutron scattering

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