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Related papers: Tailoring Interlayer Exchange Coupling of Ferromag…

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Interlayer exchange couplings were examined for Co2FeAl0.5Si0.5(CFAS)/Cr/CFAS trilayered films grown on MgO (001) single crystal and thermally oxidized Si substrates. The films were (001) epitaxial on MgO and (110) textured polycrystalline…

Materials Science · Physics 2009-11-13 T. Furubayashi , K. Kodama , H. S. Goripati , Y. K. Takahashi , K. Inomata , K. Hono

We report local probe investigations of the magnetic interaction between BiFeO3 films and a ferromagnetic Co0.9Fe0.1 layer. Within the constraints of intralayer exchange coupling in the Co0.9Fe0.1, the multiferroic imprint in the…

Materials Science · Physics 2013-05-01 M. Trassin , J. D. Clarkson , S. R. Bowden , Jian Liu , J. T. Heron , R. J. Paull , E. Arenholz , D. T. Pierce , J. Unguris

We present results of density-functional calculations on the magnetic properties of Cr, Mn, Fe and Co nano-clusters (1 to 9 atoms large) supported on Cu(001) and Cu(111). The inter-atomic exchange coupling is found to depend on competing…

Materials Science · Physics 2015-05-14 Phivos Mavropoulos , Samir Lounis , Stefan Blügel

Magnetoelectric coupling in ferromagnet/multiferroic systems is often manifested in the exchange bias effect, which may have combined contributions from multiple sources, such as domain walls, chemical defects or strain. In this study we…

Materials Science · Physics 2016-08-29 Qintong Zhang , Peyton Murray , Lu You , Caihua Wan , Xuan Zhang , Wenjing Li , Usman Khan , Junling Wang , Kai Liu , Xiufeng Han

We study coupling between the ferroelectric polarization and magnetization of granular ferromagnetic film using a phenomenological model of combined multiferroic system consisting of granular ferromagnetic film placed above the…

Mesoscale and Nanoscale Physics · Physics 2014-10-27 O. G. Udalov , N. M. Chtchelkatchev , I. S. Beloborodov

We describe the effect of the Fe layer thickness on the antiferromagnetic interlayer exchange coupling in [Fe/MgO]$_N$ superlattices. An increase in coupling strength with increasing Fe layer thickness is observed, which highlights the need…

Materials Science · Physics 2024-06-04 Anna L. Ravensburg , Matías P. Grassi , Björgvin Hjövarsson , Vassilios Kapaklis

The magnetic properties of thin Pd fcc(001) films with embedded monolayers of Fe are investigated by means of first principles density functional theory. The induced spin polarization in Pd is calculated and analyzed in terms of quantum…

Materials Science · Physics 2016-08-16 Erik Holmström , Lars Nordström , A. M. N. Niklasson

We investigate the interlayer coupling between two thin ferromagnetic (F) films mediated by an antiferromagnetic (AF) spacer in F*/AF/F trilayers and show how it transitions between different regimes on changing the AF thickness. Employing…

We describe a systematic study of the exchange coupling between a magnetically hard metallic ferromagnet (MnAs) and a magnetically soft ferromagnetic semiconductor (GaMnAs) in bilayer and trilayer heterostructures. An exchange spring model…

Materials Science · Physics 2015-05-13 M. J. Wilson , M. Zhu , R. C. Myers , D. D. Awschalom , P. Schiffer , N. Samarth

We demonstrate a direct correlation between the domain structure of multiferroic BiFeO3 thin films and exchange bias of Co0.9Fe0.1/BiFeO3 heterostructures. Two distinct types of interactions, an enhancement of the coercive field (exchange…

Exchange coupling between two magnetic layers through an interlayer is of broad interest for numerous recent applications of nano-magnetic systems. In this Letter we study ferromagnetic exchange coupling through amorphous paramagnetic Fe-Ta…

Materials Science · Physics 2013-04-11 Matthias Gottwald , Jimmy J. Kan , Kangho Lee , Seung H. Kang , Eric E. Fullerton

We present a laterally resolved X-ray magnetic dichroism study of the magnetic proximity effect in a highly ordered oxide system, i.e. NiO films on Fe3O4(110). We found that the magnetic interface shows an ultrasharp electronic, magnetic…

Materials Science · Physics 2008-01-10 I. P. Krug , F. U. Hillebrecht , H. Gomonaj , M. Haverkort , A. Tanaka , L. H. Tjeng , C. M. Schneider

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…

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)…

We demonstrate an exchange bias in (Ga,Mn)As induced by antiferromagnetic coupling to a thin overlayer of Fe. Bias fields of up to 240 Oe are observed. Using element-specific x-ray magnetic circular dichroism measurements, we distinguish a…

We present a detailed study of the ground-state magnetic structure of ultrathin Fe films on the surface of fcc Ir(001). We use the spin-cluster expansion technique in combination with the relativistic disordered local moment scheme to…

Mesoscale and Nanoscale Physics · Physics 2015-05-30 A. Deák , L. Szunyogh , B. Ujfalussy

The atomic interaction and magnetic properties of ultrathin Fe films grown on cleaved and polished MgO(100) surfaces were studied by conversion electron M\"{o}ssbauer spectroscopy (CEMS) in broad temperature range. Fe with different layer…

Materials Science · Physics 2011-09-23 I. Dézsi , Cs. Fetzer , F. Tanczikó , A. Nakanishi , T. Kobayashi

We have combined neutron scattering and piezoresponse force microscopy to study the relation between the exchange bias observed in CoFeB/BiFeO3 heterostructures and the multiferroic domain structure of the BiFeO3 films. We show that the…

Materials Science · Physics 2009-11-13 H. Bea , M. Bibes , F. Ott , B. Dupe , X. -H. Zhu , S. Petit , S. Fusil , C. Deranlot , K. Bouzehouane , A. Barthelemy

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

We have explored the possibility to orient spins in antiferromagnetic thin films with low magnetocrystalline anisotropy via the exchange coupling to adjacent antiferromagnetic films with high magnetocrystalline anisotropy. We have used MnO…

Strongly Correlated Electrons · Physics 2008-06-12 S. I. Csiszar , M. W. Haverkort , T. Burnus , Z. Hu , A. Tanaka , H. H. Hsieh , H. -J. Lin , C. T. Chen , J. C. Cezar , N. B. Brookes , T. Hibma , L. H. Tjeng
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