Structural characterization of Cr/Gd/Cr and Cr/Gd/Fe/Cr multilayer nanostructures by X-ray reflectometry / Babanov Yu. A.,Salamatov Yu. A.,Ponomarev D. A.,Naumova L. I.,Proglyado V. V.,Milyaev M. A.,Ustinov V. V. // PHYSICS OF METALS AND METALLOGRAPHY. - 2015. - V. 116, l. 11. - P. 1116-1126.

ISSN/EISSN:

0031-918X / 1555-6190

Type:

Article

Abstract:

It is shown that the new approach to low-contrast systems upon the interpretation of X-ray reflectivity data can be applied to multilayer samples such as Cr/Gd/Fe/Cr/Si. The method is based on solving the Fredholm integral equation of the first kind, which connects the reflectivity with the concentration profiles of elements that enter into the sample composition. The inverse ill-posed problem of the determination of the concentration profile is solved using the regularization method. The efficiency of the method proposed is verified by model calculations fulfilled for a Cr/Gd/Fe/Cr/Si four-layer structure, where there are both high-contrast pairs of layers (Cr/Gd) and pairs with a low contrast (Fe/Cr). Experimental data for Cr/Gd/Cr and Cr/Gd/Fe/Cr multilayer nanoheterostructures have been obtained under laboratory conditions. The thicknesses of all layers of all the elements and of the Cr/Gd, Gd/Fe, and Fe/Cr interfaces have been determined.

Author keywords:

X-ray reflectometry (XRR); multilayer structures; inverse ill-posed problem PHASELESS INVERSE SCATTERING; REFLECTIVITY

DOI:

10.1134/S0031918X15110022

Web of Science ID:

ISI:000365032700008

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	NOV
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
EISSN	1555-6190
Keywords-Plus	PHASELESS INVERSE SCATTERING; REFLECTIVITY
Research-Areas	Metallurgy \& Metallurgical Engineering
Web-of-Science-Categories	Metallurgy \& Metallurgical Engineering
Author-Email	babanov@imp.uran.ru
ResearcherID-Numbers	Proglyado, Vyacheslav/K-7725-2013 Milyaev, Mikhail/J-8070-2013 Ponomarev, Dmitry/J-5647-2013 Ustinov, Vladimir/G-7501-2011 Naumova, Larisa/K-3028-2013 Salamatov, Yuri/J-3527-2013 Babanov, Yuri/J-5549-2013
ORCID-Numbers	Proglyado, Vyacheslav/0000-0003-3760-8696 Milyaev, Mikhail/0000-0001-7828-3571 Ponomarev, Dmitry/0000-0002-0663-3699 Ustinov, Vladimir/0000-0002-5155-7947 Naumova, Larisa/0000-0001-5463-6790 Salamatov, Yuri/0000-0002-3857-2392
Funding-Acknowledgement	Russian Foundation for Basic Research {[}14-22-01063-ofi-m, 15-02-01674-a]; program of the Ural Branch of the Russian Academy of Sciences ``Fundamentals of Technologies of Nanostructures and Nanomaterials{''} {[}15-9-2-22]; Program of the Federal support for leading scientific schools of the Russian Federation {[}NSh-1540.2014.2]
Funding-Text	The work was performed according to the Government order on the theme ``Spin,{''} no. 01201463330; it was supported in part by the Russian Foundation for Basic Research (project nos. 14-22-01063-ofi-m and 15-02-01674-a); by the program of the Ural Branch of the Russian Academy of Sciences ``Fundamentals of Technologies of Nanostructures and Nanomaterials{''} (project no. 15-9-2-22); and by the Program of the Federal support for leading scientific schools of the Russian Federation (project no. NSh-1540.2014.2). We thank L.N. Romashev, T.P. Krinitsina, and E.A. Kravtsov for their participation in the discussions of the results of this work.
Number-of-Cited-References	19
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	3
Journal-ISO	Phys. Metals Metallogr.
Doc-Delivery-Number	CW5JW