KFU. Card publication. Synthesis, characterization, and magnetoresistive properties of the epitaxial pd0.96fe0.04/vn/pd0.92fe0.08 superconducting spin-valve heterostructure

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SYNTHESIS, CHARACTERIZATION, AND MAGNETORESISTIVE PROPERTIES OF THE EPITAXIAL PD0.96FE0.04/VN/PD0.92FE0.08 SUPERCONDUCTING SPIN-VALVE HETEROSTRUCTURE

Form of presentation

Articles in international journals and collections

Year of publication

2021

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Authors, employees of KFU

Gumarov Amir Ildusovich, author

Kiyamov Ayrat Gazinurovich, author

Tagirov Lenar Rafgatovich, author

Yusupov Roman Valerevich, author

Yanilkin Igor Vitalevich, author

Bibliographic description in the original language

Synthesis, characterization, and magnetoresistive properties of the epitaxial Pd0.96Fe0.04/VN/Pd0.92Fe0.08 superconducting spin-valve heterostructure / I.V. Yanilkin, W.M. Mohammed, A.I. Gumarov, A.G. Kiiamov, R.V. Yusupov, L.R. Tagirov // Nanomaterials (MDPI). – 2021. – V.11. – Art.64. https://doi.org/10.3390/nano11010064

Annotation

Abstract: A thin-film superconductor(S)/ferromagnet(F) Fl/S/F2-type Pdo.96Feo.o4(20 nm)/VN(30 nm)/ Pdo.92Feo.08(12 nm) heteroepitaxial structure was synthesized on (OOl)-oriented single-crystal MgO substrate utilizing a combination of the reactive magnetron sputtering and the molecular-beam epitaxy techniques in ultrahigh vacuum conditions. The reference VN film, Pdo.95Feo.04/VN, and VN/Pdo.92Feo.o8 bilayers were grown in one run with the target sample. In-situ low-energy electron diffraction and ex-situ X-ray diffraction investigations approved that all the Pdi_xFex and VN layers in the series grew epitaxial in a cube-on-cube mode. Electric resistance measurements demonstrated sharp transitions to the superconducting state with the critical temperature reducing gradually from 7.7 to 5.4 � in the sequence of the VN film, Pdo.96Feo.04/VN, VN/Pdo.92Feo.o8/ and Pdo.96Feo.04/VN/Pdo.92Feo.08 heterostructures due to the superconductor/ferromagnet proximity effect. Transition width increased in the same sequence from 21 to 40 mK. Magnetoresistance studies of the trilayer Pdo.96Feo.04/VN/Pdo.92Feo.08 sample revealed a superconducting spin-valve effect upon switching between the parallel and antiparallel magnetic configurations, and anomalies associated with the magnetic moment reversals of the ferromagnetic Pdo.92Feo.08 and Pdo.96Feo.04 alloy layers. The moderate critical temperature suppression and manifestations of superconducting spin-valve properties make this kind of material promising for superconducting spintronics applications.

Keywords

Epitaxial thin-film, heterostructure, Palladium-iron alloy, Spintronics, Superconducting spin-valve, Vanadium nitride

The name of the journal

Nanomaterials

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85098647120&doi=10.3390%2fnano11010064&partnerID=40&md5=976a8a5f131b1af4052c23ddeab1d2c7

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=248616&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Gumarov Amir Ildusovich	ru_RU
dc.contributor.author	Kiyamov Ayrat Gazinurovich	ru_RU
dc.contributor.author	Tagirov Lenar Rafgatovich	ru_RU
dc.contributor.author	Yusupov Roman Valerevich	ru_RU
dc.contributor.author	Yanilkin Igor Vitalevich	ru_RU
dc.date.accessioned	2021-01-01T00:00:00Z	ru_RU
dc.date.available	2021-01-01T00:00:00Z	ru_RU
dc.date.issued	2021	ru_RU
dc.identifier.citation	Synthesis, characterization, and magnetoresistive properties of the epitaxial Pd0.96Fe0.04/VN/Pd0.92Fe0.08 superconducting spin-valve heterostructure / I.V. Yanilkin, W.M. Mohammed, A.I. Gumarov, A.G. Kiiamov, R.V. Yusupov, L.R. Tagirov // Nanomaterials (MDPI). – 2021. – V.11. – Art.64. https://doi.org/10.3390/nano11010064	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=248616&p_lang=2	ru_RU
dc.description.abstract	Nanomaterials	ru_RU
dc.description.abstract	Abstract: A thin-film superconductor(S)/ferromagnet(F) Fl/S/F2-type Pdo.96Feo.o4(20 nm)/VN(30 nm)/ Pdo.92Feo.08(12 nm) heteroepitaxial structure was synthesized on (OOl)-oriented single-crystal MgO substrate utilizing a combination of the reactive magnetron sputtering and the molecular-beam epitaxy techniques in ultrahigh vacuum conditions. The reference VN film, Pdo.95Feo.04/VN, and VN/Pdo.92Feo.o8 bilayers were grown in one run with the target sample. In-situ low-energy electron diffraction and ex-situ X-ray diffraction investigations approved that all the Pdi_xFex and VN layers in the series grew epitaxial in a cube-on-cube mode. Electric resistance measurements demonstrated sharp transitions to the superconducting state with the critical temperature reducing gradually from 7.7 to 5.4 � in the sequence of the VN film, Pdo.96Feo.04/VN, VN/Pdo.92Feo.o8/ and Pdo.96Feo.04/VN/Pdo.92Feo.08 heterostructures due to the superconductor/ferromagnet proximity effect. Transition width increased in the same sequence from 21 to 40 mK. Magnetoresistance studies of the trilayer Pdo.96Feo.04/VN/Pdo.92Feo.08 sample revealed a superconducting spin-valve effect upon switching between the parallel and antiparallel magnetic configurations, and anomalies associated with the magnetic moment reversals of the ferromagnetic Pdo.92Feo.08 and Pdo.96Feo.04 alloy layers. The moderate critical temperature suppression and manifestations of superconducting spin-valve properties make this kind of material promising for superconducting spintronics applications.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Epitaxial thin-film	ru_RU
dc.subject	heterostructure	ru_RU
dc.subject	Palladium-iron alloy	ru_RU
dc.subject	Spintronics	ru_RU
dc.subject	Superconducting spin-valve	ru_RU
dc.subject	Vanadium nitride	ru_RU
dc.title	Synthesis, characterization, and magnetoresistive properties of the epitaxial pd0.96fe0.04/vn/pd0.92fe0.08 superconducting spin-valve heterostructure	ru_RU
dc.type	Articles in international journals and collections	ru_RU