Interlayer coupling in Fe/Cr/Gd multilayer structures

Дровосеков, А. Б.; Крейнес, Н. М.; Savitsky, A. O.; Кравцов, Е. А.; Blagodatkov, D. V.; Ryabukhina, M. V.; Milyaev, M. A.; Ustinov, V. V.; Pashaev, É. M.; Subbotin, I. A.; Prutskov, G. V.

doi:10.1134/s1063776115060059

Cited by 18 publications

(10 citation statements)

References 30 publications

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“…5 . In case of Sc spacer when we reach four layers the magnetic coupling disappears, while in Cr and Mn the oscillating behaviour is sustained by the intrinsic magnetic moment as experimentally observed for Cr spacer 19 and Fe/Cr/Gd/Gr superlattices 20 . For the Fe/Cr/Gd/Cr superlattice, a RKKY type of behavior was found in contrast to the non-magnetic interlayers.…”

Section: Resultssupporting

confidence: 66%

Recipe for High Moment Materials with Rare-earth and 3d Transition Metal Composites

Autieri

Kumar

Walecki

et al. 2016

Sci Rep

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Materials with high volume magnetization are perpetually needed for the generation of sufficiently large magnetic fields by writer pole of magnetic hard disks, especially for achieving increased areal density in storage media. In search of suitable materials combinations for this purpose, we have employed density functional theory to predict the magnetic coupling between iron and gadolinium layers separated by one to several monolayers of 3d transition metals (Sc-Zn). We demonstrate that it is possible to find ferromagnetic coupling for many of them and in particular for the early transition metals giving rise to high moment. Cr and Mn are the only elements able to produce a significant ferromagnetic coupling for thicker spacer layers. We also present experimental results on two trilayer systems Fe/Sc/Gd and Fe/Mn/Gd. From the experiments, we confirm a ferromagnetic coupling between Fe and Gd across a 3 monolayers Sc spacer or a Mn spacer thicker than 1 monolayer. In addition, we observe a peculiar dependence of Fe/Gd magnetic coupling on the Mn spacer thickness.

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Section: Resultssupporting

confidence: 66%

Recipe for High Moment Materials with Rare-earth and 3d Transition Metal Composites

Autieri

Kumar

Walecki

et al. 2016

Sci Rep

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show abstract

“…Nevertheless, to the best of our knowledge, to date there have been no investigations of FMR in Fe/Gd multilayers below room temperature. In the work [15], we studied FMR in Fe/Cr/Gd systems which are essentially different from Fe/Gd. Indeed, introduction of the Cr spacer between Fe and Gd layers reduces the interlayer coupling significantly.…”

Section: Introductionmentioning

confidence: 99%

Magnetization and ferromagnetic resonance in a Fe/Gd multilayer: experiment and modelling

Дровосеков

Крейнес

Savitsky

et al. 2017

J. Phys.: Condens. Matter

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Static and dynamic magnetic properties of a [Fe(35 Å)/Gd(50 Å)] superlattice are investigated experimentally in the temperature range 5-295 K using SQUID magnetometery and the ferromagnetic resonance (FMR) technique at frequencies 7-38 GHz. The obtained magnetization curves and FMR spectra are analysed theoretically using numerical simulation on the basis of the effective field model. At every given temperature, both static and resonance experimental data can be approximated well within the proposed model. However, a considerable temperature dependence of the effective field parameter in gadolinium layers has to be taken into account to achieve reasonable agreement with the experimental data in the entire temperature range studied. To describe the peculiarities of experimental FMR spectra, a non-local diffusion-type absorption term in Landau-Lifshitz equations is considered in addition to the Gilbert damping term. Possible reasons for the observed effects are discussed.

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“…It is well known that the structure of thin films determines many technologically important properties of such systems [1][2][3]. In such a way, knowledge of the objective laws of the evolution of thin-film structures under the temperature impact is important for solving both general scientific and application tasks [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Formation of Island Structures during Melting Process of Tin Films on Amorphous Carbon Substrate

Дукаров¹,

Petrushenko²,

Sukhov³

et al. 2019

Metallofiz. Noveishie Tekhnol.

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The results of research devoted to formation of ordered arrays of particles during melting process of tin films on amorphous carbon substrate are given in the present work. Using scanning electron microscopy the histograms of particle size distribution are constructed for films of different mass thickness. The size dependences of the most probable radius of particles, which are formed during the melting process, and the half-width values of the corresponding histograms are obtained as well. The excess energy, which provides a decomposition of the initially continuous film into separate islands, is estimated and its size dependence is built. As shown, the melting process of films, which are condensed in island structures, provides larger filling coefficients in comparison with the melting process of initially continuous films.

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Interlayer coupling in Fe/Cr/Gd multilayer structures

Cited by 18 publications

References 30 publications

Recipe for High Moment Materials with Rare-earth and 3d Transition Metal Composites

Recipe for High Moment Materials with Rare-earth and 3d Transition Metal Composites

Magnetization and ferromagnetic resonance in a Fe/Gd multilayer: experiment and modelling

Formation of Island Structures during Melting Process of Tin Films on Amorphous Carbon Substrate

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