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Within the racetrack memory paradigm, systems exploiting magnetic guiding potentials instead of geometrical ones, allow for enhancing the versatility of the final devices adding magnetic reconfigurable capabilities. Hard/soft magnetic…

Materials Science · Physics 2025-07-25 V. V. Fernández , S. Ferrer , A. Hierro-Rodríguez , M. Vélez

The controlled propagation of spin textures at bifurcations is a critical challenge for racetrack-based logic devices. Here, we investigate the effect of longitudinal and transverse magnetic fields on the propagation of magnetic…

Based on a multi-scale calculations, combining ab-initio methods with spin dynamics simulations, we perform a detailed study of the magnetic behavior of Ni2MnAl/Fe bilayers. Our simulations show that such a bilayer exhibits a small exchange…

Mesoscale and Nanoscale Physics · Physics 2017-09-06 Rocio Yanes , Eszter Simon , Sebastian Keller , Balazs Nagyfalusi , Sergii Khmelevsky , Laszlo Szunyogh , Ulrich Nowak

SrIrO$_3$ with its large spin-orbit coupling and low charge conductivity has emerged as a potential candidate for efficient spin-orbit torque magnetization control in spintronic devices. We here report on the influence of an interfacial…

We report an unusual, non-monotonous dependence of the exchange bias on the thickness of the ferromagnetic layer in a ferromagnet/antiferromagnet bilayer system. We show that in epitaxial CoO/Fe(110) bilayers, the evolution of the Fe…

Mesoscale and Nanoscale Physics · Physics 2017-09-29 M. Ślęzak , T. Ślęzak , P. Dróżdż , B. Matlak , K. Matlak , J. Korecki

We present a comprehensive study on the magnetization reversal in Fe/NiFe bilayer system by alternating the order of the magnetic layers. All the samples show growth-induced uniaxial magnetic anisotropy due to oblique angle deposition…

Spin transfer in asymmetric Co/Cu/Co bilayer magnetic nanopillars junctions has been studied at low temperature as a function of free-layer thickness. The phase diagram for current-induced magnetic excitations has been determined for…

Mesoscale and Nanoscale Physics · Physics 2007-09-14 W. Chen , A. D. Kent , M. J. Rooks , N. Ruiz , J. Z. Sun

The exchange bias (EB) effect, arising from interfacial coupling between ferromagnetic (FM) and antiferromagnetic (AF) layers, induces a unidirectional magnetic anisotropy and underpins a wide range of spintronic functionalities. Extending…

Materials Science · Physics 2026-01-16 Balram Singh , Aman Singh , Stefan Mikulik , Jakub Jurczyk , Volker Neu , Amalio Fernández-Pacheco

Ferrites with (inverse) spinel structure display a large variety of electronic and magnetic properties making some of them interesting for potential applications in spintronics. We investigate the thermally induced interdiffusion of…

Superconductor/Ferromagnet (S/F) hybrid systems show interesting magneto-transport behaviors that result from the transfer of properties between both constituents. For instance, magnetic memory can be transferred from the F into the S…

We theoretically investigate topological spin transport of the magnon-polarons in bilayer magnet with two-dimensional square lattices. Our theory is motivated by recent reports on the van der Waals magnets which show the reversible…

Mesoscale and Nanoscale Physics · Physics 2022-09-14 Gyungchoon Go , Se Kwon Kim

Current-induced excitations in bilayer magnetic nanopillars have been studied with large magnetic fields applied perpendicular to the layers at low temperature. Junctions investigated all have Cu/Co/Cu/Co/Cu as core layer stacks. Two types…

Mesoscale and Nanoscale Physics · Physics 2007-09-14 Wenyu Chen , Andrew D. Kent , M. J. Rooks , N. Ruiz , Jonathan Z. Sun

The paper concerns experimental verification of the magnitude of imaginary part of spin mixing conductance in bilayers comprising heavy metals. We present results of broadband ferromagnetic resonance studies on heterostructures consisting…

Mesoscale and Nanoscale Physics · Physics 2020-05-13 Adam Krysztofik , Piotr Graczyk , Hubert Głowiński , Emerson Coy , Karol Załęski , Iwona Gościańska , Janusz Dubowik

In this Comment we report a phenomenon identical to that observed in ({Y. Sun, M. B. Salamon, K. Garnier and R. S. Averback, Phys. Rev. Lett. 91, 167206 (2003)}) for systems of NiFe{$_2$}O{$_4$} particles (mean size $\approx$ 3nm) embedded…

Materials Science · Physics 2007-05-23 S. Chakravarty , A. Frydman , M. Bandyopadhyay , S. Dattagupta , S. Sengupta

Assessing and controlling magnetic interactions in magnetic nanostructures are critical to nanomagnetic and spintronic explorations, such as magnetic recording media, permanent magnets, magnetic memory and logic devices, etc. Here we…

Materials Science · Physics 2016-09-19 Dustin A. Gilbert , Jung-Wei Liao , Brian J. Kirby , Michael Winklhofer , Chih-Huang Lai , Kai Liu

We have carried out detailed experimental studies of the exchange bias effect of a series of CoO/Co(111) textured bilayers with different Co layer thickness, using the magneto-optical Kerr effect, SQUID magnetometry, polarized neutron…

Materials Science · Physics 2016-08-31 F. Radu , M. Etzkorn , R. Siebrecht , T. Schmitte , K. Westerholt , H. Zabel

This paper is concerned with a theoretical analysis of the behavior of optically excited spin currents in bilayer and multilayer systems of ferromagnetic and normal metals. As the propagation, control and manipulation of the spin currents…

Mesoscale and Nanoscale Physics · Physics 2023-08-16 J. Briones , M. Weber , B. Stadtmüller , H. C. Schneider , B. Rethfeld

The 5d transition-metal oxides have been an intriguing platform to demonstrate efficient charge to spin current conversion due to a unique electronic structure dominated by strong spin-orbit coupling. Here, we report on stacking-order…

Materials Science · Physics 2021-10-07 Kohei Ueda , Naoki Moriuchi , Kenta Fukushima , Takanori Kida , Masayuki Hagiwara , Jobu Matsuno

Magnetic vortices are topological spin structures frequently found in ferromagnets, yet novel to antiferromagnets. By combining experiment and theory, we demonstrate that in a nanostructured antiferromagnetic-ferromagnetic NiO(111)-Fe(110)…

In this study we investigate the exchange coupling between the hard magnetic compound MnBi and the soft magnetic alloy FeCo including the interface structure between the two phases. Exchange spring MnBi-Fe$_x$Co$_{1-x}$ (x = 0.65 and 0.35)…

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