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Related papers: CoFeB/MgO/CoFeB structures with orthogonal easy ax…

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Despite the crucial role of interfacial perpendicular magnetic anisotropy in Co(Fe)/MgO based magnetic tunnel junction, the underlying mechanism is still being debated. Here, we report an anatomical study of oxygen and Mg effect on Pt/Co…

Materials Science · Physics 2017-04-05 Yumeng Yang , Jiaren Yuan , Long Qi , Ying Wang , Yanjun Xu , Xiaowei Wang , Yuanping Feng , Baoxi Xu , Lei Shen , Yihong Wu

High-quality epitaxial ferrites, such as low-damping MgAl-ferrite (MAFO), are promising nanoscale building blocks for all-oxide heterostructures driven by pure spin current. However, the impact of oxide interfaces on spin dynamics in such…

We report on perpendicular magnetic anisotropy (PMA) in a Pt/Co2FeAl/MgO sandwiched structure with a thick Co2FeAl layer of 2-2.5 nm. The PMA is thermally stable that the anisotropy energy density Ku is 1.3{\times}106 erg/cm3 for the…

Materials Science · Physics 2015-05-27 Xiaoqi Li , Shaoqian Yin , Yupeng Liu , Delin Zhang , Xiaoguang Xu , Jun Miao , Yong Jiang

We report peculiar optical properties of the frustrated itinerant magnet HoAgGe, which exhibits multiple magnetically ordered states obeying the kagome spin-ice rule. The optical conductivity is surprisingly higher for light polarization…

Strongly Correlated Electrons · Physics 2025-04-15 F. Schilberth , L. DeFreitas , K. Zhao , F. LeMardelé , I. Mohelsky , M. Orlita , P. Gegenwart , H. Chen , I. Kézsmárki , S. Bordács

The precession and damping of a collinear magnetization displaced from its equilibrium are described by the Landau-Lifshitz-Gilbert equation. For a noncollinear magnetization, it is not known how the damping should be described. We use…

Materials Science · Physics 2015-02-09 Zhe Yuan , Kjetil M. D. Hals , Yi Liu , Anton A. Starikov , Arne Brataas , Paul J. Kelly

Transition metal ferromagnetic films with perpendicular magnetic anisotropy (PMA) have ferromagnetic resonance (FMR) linewidths that are one order of magnitude larger than soft magnetic materials, such as pure iron (Fe) and permalloy (NiFe)…

Materials Science · Physics 2009-12-14 J-M. Beaujour , D. Ravelosona , I. Tudosa , E. Fullerton , A. D. Kent

We report switching of magnetic anisotropy (MA) from in-plane to perpendicular with increasing the thickness d of a (001)-oriented ferromagnetic-semiconductor (FMS) (Ga0.7,Fe0.3)Sb layer with a high Curie temperature (Tc > 320 K), using…

Materials Science · Physics 2019-08-28 Shobhit Goel , Le Duc Anh , Nguyen Thanh Tu , Shinobu Ohya , Masaaki Tanaka

The magnetic domain structure is studied in epitaxial Fe$_{100-x}$Ga$_x$/MgO(001) films with 0 $<$ x $<$ 30 and thicknesses below 60 nm by magnetic force microscopy. For low gallium content, domains with the magnetization lying in the film…

Materials Science · Physics 2019-07-31 Adrián Begué , Maria Grazia Proietti , José I. Arnaudas , Miguel Ciria

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

We studied the dynamics of magnetization through an investigation of the magnetoimpedance effect in CoFeB/(Ta, Ag, Cu) multilayered thin films grown by magnetron sputtering. Impedance measurements were analyzed in terms of the mechanisms…

Materials Science · Physics 2015-05-28 M. S. Marques , T. Mori , L. F. Schelp , C. Chesman , F. Bohn , M. A. Correa

We study the spin dynamics of a ferromagnetic insulator on which graphene is placed. We show that the Gilbert damping is enhanced by the proximity exchange coupling at the interface. The modulation of the Gilbert damping constant is…

Mesoscale and Nanoscale Physics · Physics 2020-04-16 Yuya Ominato , Mamoru Matsuo

We show that the magnetic anisotropy in spinel-structure CoCr$_2$O$_4$ thin films exhibits a strain dependence in which compressive strain induces an out-of-plane magnetic easy axis and tensile strain an in-plane easy axis, exactly opposite…

Magnetic thin films with strong magnetoelastic coupling and low Gilbert damping are key materials for many magnetoelectric devices. Here, we investigated the effects of boron doping concentration on magnetostriction and temperature…

Materials Science · Physics 2025-05-19 Zhixin Zhang , Jinho Lim , Haoyang Ni , Jian-Min Zuo , Axel Hoffmann

We present a study of the damping and spin pumping properties of CoFeB/X/Pt systems with $\rm X=Al,Cr$ and $\rm Ta$. We show that the total damping of the CoFeB/Pt systems is strongly reduced when an interlayer is introduced independently…

Due to the wide range of applications, theoretical models of Fe3O4 films are found to be important. Ultra thin Fe3O4 films with ferrite structure have been theoretically investigated using second order perturbed modified Heisenberg…

Materials Science · Physics 2019-02-26 P. Samarasekara

Using the in-in formalism, we generalize the recently constructed magnetoelastic EFT arXiv:2112.13873 [hep-th] to describe the damping dynamics of ferromagnetic systems at long wavelengths. We find that the standard Gilbert damping term…

High Energy Physics - Theory · Physics 2023-12-21 Jingping Li

By means of first principles calculations, we have systematically investigated how the magnetodynamic properties Gilbert damping, magnetization and exchange stiffness are affected when permalloy (Py) (Fe$_{0.19}$Ni$_{0.81}$) is doped with…

Materials Science · Physics 2017-02-17 Fan Pan , Jonathan Chico , Johan Hellsvik , Anna Delin , Anders Bergman , Lars Bergqvist

Modified second order perturbed Heisenberg Hamiltonian was employed to describe the magnetic properties of ferromagnetic films with three to twenty spin layers for the first time. Previously, the solution of second order perturbed…

Strongly Correlated Electrons · Physics 2017-01-27 P. Samarasekara , T. H. Y. I. K. de Silva

We study the symmetry of the coupling between surface acoustic waves and ferromagnetic resonance in a thin magnetic film of CoFeB deposited on top of a piezoelectric Z-cut LiNbO3 substrate. We vary the orientation of the applied magnetic…

Materials Science · Physics 2026-03-24 Florian Millo , Rafael Lopes Seeger , Claude Chappert , Aurélie Solignac , Thibaut Devolder

Fourth order perturbation was applied to study a small variation of the azimuthal angle of spin of fcc structured ferromagnetic thin films with two spin layers. The variation of magnetic energy and the orientation of magnetic easy axis with…

Computational Physics · Physics 2023-01-24 M. S. M. Farhan
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