Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Multilayer Epitaxial Heterostructures With Multi-Component III–V:Fe Magnetic Semiconductors

Alexey V. Kudrin
,
Valeri P. Lesnikov
,
Ruslan N. Kriukov
ORCID logo ,
Yuri A. Danilov
,
Mikhail V. Dorokhin
,
Anastasia A. Yakovleva
,
Nataliya Yu. Tabachkova
,
Nikolai A. Sobolev
* ORCID logo
Version 1 : Received: 27 July 2023 / Approved: 28 July 2023 / Online: 31 July 2023 (10:48:45 CEST)

A peer-reviewed article of this Preprint also exists.

Kudrin, A.V.; Lesnikov, V.P.; Kriukov, R.N.; Danilov, Y.A.; Dorokhin, M.V.; Yakovleva, A.A.; Tabachkova, N.Y.; Sobolev, N.A. Multilayer Epitaxial Heterostructures with Multi-Component III–V:Fe Magnetic Semiconductors. Nanomaterials 2023, 13, 2435. Kudrin, A.V.; Lesnikov, V.P.; Kriukov, R.N.; Danilov, Y.A.; Dorokhin, M.V.; Yakovleva, A.A.; Tabachkova, N.Y.; Sobolev, N.A. Multilayer Epitaxial Heterostructures with Multi-Component III–V:Fe Magnetic Semiconductors. Nanomaterials 2023, 13, 2435.

Abstract

Three-layer structures based on various multi-component films of III–V semiconductors heavily doped with Fe were grown by pulsed laser sputtering of InSb, GaSb, InAs, GaAs and Fe solid targets. The structures comprising InAsSb:Fe, InGaSb:Fe and InSb:Fe layers with Fe concentrations up to 24 at. % separated by GaAs spacers were deposited on (001) i-GaAs substrates at 200ºC. Transmission electron microscopy showed that the structures have a rather high crystalline quality and do not contain secondary-phase inclusions. X-ray photoelectron spectroscopy investigations revealed significant diffusion of Ga atoms from the GaAs regions into the InAsSb:Fe layers, which has led to the formation of an InGaAsSb:Fe compound with a Ga content up to 20 at. %. It has been found that the ferromagnetic properties of the InAsSb:Fe magnetic semiconductor improve with increasing Sb:As ratio. It has been concluded that the indirect ferromagnetic exchange interaction between Fe atoms occurs predominantly via Sb atoms.

Keywords

magnetic semiconductors; pulsed laser deposition; III–V heterostructures; transmission electron microscopy; x-ray photoelectron spectroscopy; magnetoresistance

Subject

Physical Sciences, Condensed Matter Physics

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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