Magnetoelastic interactions and magnetic damping in Co2Fe0.4Mn0.6Si and Co2FeGa0.5Ge0.5 Heusler alloys thin films for spintronic applications

Abstract Co2Fe0.4Mn0.6Si (CFMS) and Co2FeGa0.5Ge0.5 (CFGG) Heusler alloys are among the most promising thin film materials for spintronic devices due to a high spin polarization, low magnetic damping and giant/tunneling magnetoresistance ratios. Despite numerous investigations of Heusler alloys magn...

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Autores principales:	O. M. Chumak, A. Pacewicz, A. Lynnyk, B. Salski, T. Yamamoto, T. Seki, J. Z. Domagala, H. Głowiński, K. Takanashi, L. T. Baczewski, H. Szymczak, A. Nabiałek
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/605b2c01583a45518d93edb66b2ab0b1
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spelling	oai:doaj.org-article:605b2c01583a45518d93edb66b2ab0b12021-12-02T14:37:39ZMagnetoelastic interactions and magnetic damping in Co2Fe0.4Mn0.6Si and Co2FeGa0.5Ge0.5 Heusler alloys thin films for spintronic applications10.1038/s41598-021-87205-y2045-2322https://doaj.org/article/605b2c01583a45518d93edb66b2ab0b12021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-87205-yhttps://doaj.org/toc/2045-2322Abstract Co2Fe0.4Mn0.6Si (CFMS) and Co2FeGa0.5Ge0.5 (CFGG) Heusler alloys are among the most promising thin film materials for spintronic devices due to a high spin polarization, low magnetic damping and giant/tunneling magnetoresistance ratios. Despite numerous investigations of Heusler alloys magnetic properties performed up to now, magnetoelastic effects in these materials remain not fully understood; due to quite rare studies of correlations between magnetoelastic and other magnetic properties, such as magnetic dissipation or magnetic anisotropy. In this research we have investigated epitaxial CFMS and CFGG Heusler alloys thin films of thickness in the range of 15–50 nm. We have determined the magnetoelastic tensor components and magnetic damping parameters as a function of the magnetic layer thickness. Magnetic damping measurements revealed the existence of non-Gilbert dissipation related contributions, including two-magnon scattering and spin pumping phenomena. Magnetoelastic constant B11 values and the effective magnetic damping parameter α eff values were found to be in the range of − 6 to 30 × 106 erg/cm3 and between 1 and 12 × 10–3, respectively. The values of saturation magnetostriction λS for CFMS Heusler alloy thin films were also obtained using the strain modulated ferromagnetic resonance technique. The correlation between α eff and B11, depending on magnetic layer thickness was determined based on the performed investigations of the above mentioned magnetic properties.O. M. ChumakA. PacewiczA. LynnykB. SalskiT. YamamotoT. SekiJ. Z. DomagalaH. GłowińskiK. TakanashiL. T. BaczewskiH. SzymczakA. NabiałekNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q O. M. Chumak A. Pacewicz A. Lynnyk B. Salski T. Yamamoto T. Seki J. Z. Domagala H. Głowiński K. Takanashi L. T. Baczewski H. Szymczak A. Nabiałek Magnetoelastic interactions and magnetic damping in Co2Fe0.4Mn0.6Si and Co2FeGa0.5Ge0.5 Heusler alloys thin films for spintronic applications
description	Abstract Co2Fe0.4Mn0.6Si (CFMS) and Co2FeGa0.5Ge0.5 (CFGG) Heusler alloys are among the most promising thin film materials for spintronic devices due to a high spin polarization, low magnetic damping and giant/tunneling magnetoresistance ratios. Despite numerous investigations of Heusler alloys magnetic properties performed up to now, magnetoelastic effects in these materials remain not fully understood; due to quite rare studies of correlations between magnetoelastic and other magnetic properties, such as magnetic dissipation or magnetic anisotropy. In this research we have investigated epitaxial CFMS and CFGG Heusler alloys thin films of thickness in the range of 15–50 nm. We have determined the magnetoelastic tensor components and magnetic damping parameters as a function of the magnetic layer thickness. Magnetic damping measurements revealed the existence of non-Gilbert dissipation related contributions, including two-magnon scattering and spin pumping phenomena. Magnetoelastic constant B11 values and the effective magnetic damping parameter α eff values were found to be in the range of − 6 to 30 × 106 erg/cm3 and between 1 and 12 × 10–3, respectively. The values of saturation magnetostriction λS for CFMS Heusler alloy thin films were also obtained using the strain modulated ferromagnetic resonance technique. The correlation between α eff and B11, depending on magnetic layer thickness was determined based on the performed investigations of the above mentioned magnetic properties.
format	article
author	O. M. Chumak A. Pacewicz A. Lynnyk B. Salski T. Yamamoto T. Seki J. Z. Domagala H. Głowiński K. Takanashi L. T. Baczewski H. Szymczak A. Nabiałek
author_facet	O. M. Chumak A. Pacewicz A. Lynnyk B. Salski T. Yamamoto T. Seki J. Z. Domagala H. Głowiński K. Takanashi L. T. Baczewski H. Szymczak A. Nabiałek
author_sort	O. M. Chumak
title	Magnetoelastic interactions and magnetic damping in Co2Fe0.4Mn0.6Si and Co2FeGa0.5Ge0.5 Heusler alloys thin films for spintronic applications
title_short	Magnetoelastic interactions and magnetic damping in Co2Fe0.4Mn0.6Si and Co2FeGa0.5Ge0.5 Heusler alloys thin films for spintronic applications
title_full	Magnetoelastic interactions and magnetic damping in Co2Fe0.4Mn0.6Si and Co2FeGa0.5Ge0.5 Heusler alloys thin films for spintronic applications
title_fullStr	Magnetoelastic interactions and magnetic damping in Co2Fe0.4Mn0.6Si and Co2FeGa0.5Ge0.5 Heusler alloys thin films for spintronic applications
title_full_unstemmed	Magnetoelastic interactions and magnetic damping in Co2Fe0.4Mn0.6Si and Co2FeGa0.5Ge0.5 Heusler alloys thin films for spintronic applications
title_sort	magnetoelastic interactions and magnetic damping in co2fe0.4mn0.6si and co2fega0.5ge0.5 heusler alloys thin films for spintronic applications
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/605b2c01583a45518d93edb66b2ab0b1
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Magnetoelastic interactions and magnetic damping in Co2Fe0.4Mn0.6Si and Co2FeGa0.5Ge0.5 Heusler alloys thin films for spintronic applications

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