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Related papers: Interlayer Exchange Coupling in M/N/M Multilayer

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We investigate the magnetocaloric effect obtained by the rotation of a magnetic field applied to an exchange-coupled multilayer system composed of two different ferromagnetic (FM) materials. We specifically consider a system in which the…

Materials Science · Physics 2024-04-12 Vittorio Basso , Carlo P. Sasso , Martino LoBue , Karl G. Sandeman

This article reports dependence of exchange bias (EB) effect on interparticle interactions in nanocrystalline Co/CoO core/shell structures, synthesized using conventional sol-gel technique. Analysis via powder X-Ray diffraction (PXRD)…

Exchange bias phenomenon is generally ascribed to the exchange coupling at the interfaces between ferromagnetic and antiferromagnetic layers. Here, we propose a bulk form of exchange bias in a single-phase magnet where the coupling between…

Strongly Correlated Electrons · Physics 2013-06-07 Young Sun , Junzhuang Cong , Yisheng Chai , Liqin Yan , Yuelei Zhao , Shouguo Wang , Wei Ning , Yuheng Zhang

Intra-atomic exchange couplings (IEC) between $5d6s$ and $4f$ electrons are ubiquitous in rare-earth metals and play a critical role in spin dynamics. However, detecting them in real time domain has been difficult. Here we show the direct…

Materials Science · Physics 2017-12-19 G. P. Zhang , T. Jenkins , M. Bennett , Y. H. Bai

Exchange bias is a unidirectional magnetic anisotropy that often arise from interfacial interaction of a ferromagnetic and antiferromagnetic layers. In this article, we show that a metallic layer with spin-orbit coupling can induces an…

Mesoscale and Nanoscale Physics · Physics 2024-11-26 Adam B. Cahaya , Ansell Alvarez Anderson , Anugrah Azhar , Muhammad Aziz Majidi

Nanomagnetism concerns the engineering of magnetic interactions in heterostructures that consist of layers of magnetic and non-magnetic materials. Mostly, these interactions are dominated by the minimization of energy. Here, we propose an…

Mesoscale and Nanoscale Physics · Physics 2025-05-21 William Huddie , Laura Filion , Marjolein Dijkstra , Rembert Duine

The transmission through a magnetic layer of correlated electrons sandwiched between non-interacting normal-metal leads is studied within model calculations. We consider the linear regime in the framework of the Meir-Wingreen formalism,…

Mesoscale and Nanoscale Physics · Physics 2022-05-25 Andreas Weh , Wilhelm H. Appelt , Andreas Östlin , Liviu Chioncel , Ulrich Eckern

The demagnetization and associated magnetocaloric effect in strong-weak-strong ferromagnetic trilayers, upon a reorientation of the strong ferromagnets from parallel to antiparallel magnetization, is simulated using atomistic spin dynamics.…

Mesoscale and Nanoscale Physics · Physics 2022-12-28 Milton Persson , Mykola Kulyk , Anatolii Kravets , Vladislav Korenivski

The coupling of ferroelectricity and magnetic order provides rich tunability for engineering material properties and demonstrates great potential for uncovering novel quantum phenomena and multifunctional devices. Here, we report…

A thin Hafnium film is shown to act both as an effective diffusion barrier for manganese at a thickness of 0.7 nm, and as an effective exchange coupling layer in a sandwich structure with perpendicular magnetic anisotropy. The magnetic…

Materials Science · Physics 2017-10-11 Kiril Borisov , Gwenaël Atcheson , Gavin D'Arcy , Yong-Chang Lau , J. M. D. Coey , Karsten Rode

A study of the multilayer system MgO/CoFeB(1.1nm)/Ta($t$)/CoFeB(0.8nm)/MgO is presented, where the two CoFeB layers are separated by a Ta interlayer of varying thickness $t$. The magnetization properties deduced from complementary…

The isothermal magnetic entropy changes are studied in Ni80Fe20/Ni67Cu33/Co90Cu10/Mn80Ir20 stacks at temperatures near the Curie point of the Ni67Cu33 spacer by applying magnetic fields in a few tens of Oersted. Such low fields were…

Mesoscale and Nanoscale Physics · Physics 2018-08-01 S. N. Vdovichev , N. I. Polushkin , I. D. Rodionov , V. N. Prudnikov , J. Chang , A. A. Fraerman

Using spin-polarized low-energy electron microscopy to study magnetization in epitaxial layered systems, we found that the area vs perimeter relationship of magnetic domains in the top Fe layers of Fe/NiO/Fe(100) structures follows a…

Materials Science · Physics 2008-01-08 N. Rougemaille , M. Portalupi , A. Brambilla , P. Biagioni , A. Lanzara , M. Finazzi , A. K. Schmid , L. Duò

We investigate the interlayer exchange coupling in Fe/MgO/Fe and Fe/MgO/Co systems with magnetic Fe nanoclusters embedded in the MgO spacer. Samples are grown by molecular beam epitaxy (MBE) and utilize wedged MgO films to independently…

Mesoscale and Nanoscale Physics · Physics 2010-12-16 Jared J. I. Wong , Luciana Ramirez , A. G. Swartz , A. Hoff , Wei Han , Yan Li , R. K. Kawakami

The dynamics of the magnetization of the free layer in a spin-torque nano oscillator (STNO) influenced by a noncollinear alignment between the magnetizations of the free and pinned layers due to an interlayer exchange coupling has been…

Applied Physics · Physics 2022-09-14 R. Arun , R. Gopal , V. K. Chandrasekar , M. Lakshmanan

Spintronic applications, which rely on spin torques for operation, would greatly benefit from a non-collinear alignment between magnetizations of adjacent ferromagnetic layers for maximum performance and reliability. We demonstrate that…

Materials Science · Physics 2019-01-23 Zachary Raymond Nunn , Erol Girt

We show that a Josephson current flowing through a ferromagnet-normal-metal-ferromagnet trilayer connected to two superconducting electrodes induces an equilibrium exchange interaction between the magnetic moments of the ferromagnetic…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Xavier Waintal , Piet W. Brouwer

We revisit the non-collinear exchange coupling across the trilayer magnetic junction mediated by the diluted-magnetic-semiconductor thin film. By numerical approaches, we investigate the spiral angle between the ferromagnetic layers…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Chia-Hui Lin , Hsiu-Hau Lin , Tzay-Ming Hong

The proximity effect in a model manganite-cuprate system is investigated theoretically. We consider a situation in which spin-polarized electrons in manganite layers antiferromagnetically couple with electrons in cuprate layers as observed…

Strongly Correlated Electrons · Physics 2010-12-15 Juan Salafranca , Satoshi Okamoto

This Letter presents an investigation on the effects of mutual coupling in a metamaterial comprising two sets of electric-LC (ELC) resonators with different resonance frequencies. Through simulation and experiment, it is found that the two…