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To get a reliable ab-initio value for the magneto-crystalline anisotropy (MCA) energy of FePt, we employ the full-potential linearized augmented plane wave (FLAPW) method and the full-potential Korringa-Kohn-Rostoker (KKR) Green function…

Materials Science · Physics 2016-11-02 Saleem Ayaz Khan , Peter Blaha , Hubert Ebert , Jan Minár , Ondřej Šipr

Perpendicular heterostructures based on a ferrimagnetic Mn2RuxGa (MRG) layer and a ferromagnetic Co/Pt multilayer were examined to understand the effects of different spacer layers (V, Mo, Hf, HfOx and TiN) on the interfaces with the…

Materials Science · Physics 2021-09-21 Gwenael Atcheson , Katarzyna Siewierska , J. M. D. Coey , Karsten Rode , Plamen Stamenov

Studies of magnetization dynamics have incessantly facilitated the discovery of fundamentally novel physical phenomena, making steady headway in the development of magnetic and spintronics devices. The dynamics can be induced and detected…

Strain is a leading candidate for controlling magnetoelectric coupling in multiferroics. Here, we use x-ray diffraction to study the coupling between magnetic order and structural distortion in epitaxial films of the orthorhombic (o-)…

Strongly Correlated Electrons · Physics 2015-06-18 Y. W. Windsor , S. W. Huang , Y. Hu , L. Rettig , A. Alberca , K. Shimamoto , V. Scagnoli , T. Lippert , C. W. Schneider , U. Staub

We investigated structural, magnetic and electrical properties of sputter deposited Mn-Fe-Ga compounds. The crystallinity of the Mn-Fe-Ga thin films was confirmed using x-ray diffraction. X-ray reflection and atomic force microscopy…

Materials Science · Physics 2016-08-02 Alessia Niesen , Christian Sterwerf , Manuel Glas , Jan-Michael Schmalhorst , Günter Reiss

The temperature dependence of magnetic anisotropy in (113)A (Ga,Mn)As layers grown by molecular beam epitaxy is studied by means of superconducting quantum interference device (SQUID) magnetometry as well as by ferromagnetic resonance (FMR)…

The interaction between superconductivity and ferromagnetism in thin film superconductor/ferromagnet heterostructures is usually reflected by a change in superconductivity of the S layer set by the magnetic state of the F layers. Here we…

The influence of a strain-induced uniaxial magnetoelastic anisotropy on the magnetic vortex core dynamics in microstructured magnetostrictive Co$_{40}$Fe$_{40}$B$_{20}$ elements was investigated with time-resolved scanning transmission…

The electronic structure and magnetic properties of the 2H-NbS$_2$ compound intercalated by Cr, Mn and Fe, have been investigated by means of the Korringa-Kohn-Rostoker (KKR) method. The calculations demonstrate easy plane…

Materials Science · Physics 2016-11-30 S. Mankovsky , S. Polesya , H. Ebert , W. Bensch

In intercalated transition metal dichalcogenide $Fe_xTaS_2$ (0.2 $\leq$ x $\leq$ 0.4) single crystals, large magnetic anisotropy is observed. Transport property measurements indicate that heavy Fe-doping leads to a large anisotropy of…

Strongly Correlated Electrons · Physics 2017-05-10 G. Wu , B. L. Kang , Y. L. Li , T. Wu , N. Z. Wang , X. G. Luo , Z. Sun , L. J. Zou , X. H. Chen

We investigated the effect of an electric field on the interface magnetic anisotropy of a thin MgO/Fe/MgO layer using density functional theory. The perpendicular magnetic anisotropy energy (MAE) increases not only under electron depletion…

Materials Science · Physics 2015-06-23 Daiki Yoshikawa , Masao Obata , Yusaku Taguchi , Shinya Haraguchi , Tatsuki Oda

Rh-terminated FeRh(001) film is known to be stable in a ferromagnetic (FM) state different from a G-type antiferromagnetic (G-AFM) bulk ground state, while an Fe-terminated FeRh(001) film has the same ground state as the bulk. In this…

Materials Science · Physics 2019-06-19 Eunsung Jekal

Perpendicularly magnetized films showing small saturation magnetization, $M_\mathrm{s}$, are essential for spin-transfer-torque writing type magnetoresistive random access memories, STT-MRAMs. An intermetallic compound, {(Mn-Cr)AlGe} of the…

Materials Science · Physics 2021-07-02 Takahide Kubota , Keita Ito , Rie Y Umetsu , Koki Takanashi

FeTaN/TaN/FeTaN sandwich films, FeTaN/TaN and TaN/FeTaN bilayers were synthesized by using RF magnetron sputtering. The magnetic properties, crystalline structures, microstructures and surface morphologies of the as-deposited samples were…

Materials Science · Physics 2009-11-10 H. B. Nie , C. K. Ong , J. P. Wang , Z. W. Li

Tetragonally distorted \(\rm{Mn}_{3-x}\rm{Ga}_x\) thin films with \(0.1< x < 2\) show a strong perpendicular magnetic anisotropy and low magnetization and thus have the potential to serve as electrodes in spin transfer torque magnetic…

Growing demands for the voltage-driven spintronic applications with ultralow-power consumption have led to new interest in exploring the voltage-induced magnetization switching in ferromagnetic metals. In this study, we observed a large…

We investigate the impact of mechanical strains and a perpendicular electric field on the electronic and magnetic ground-state properties of two-dimensional monolayer CrI$_3$ using density functional theory. We propose a minimal spin model…

Materials Science · Physics 2020-09-23 Sahar Izadi Vishkayi , Zahra Torbatian , Alireza Qaiumzadeh , Reza Asgari

We report on a systematic study of the structural, magnetic properties and the anomalous Hall effect, in the Heusler alloy Co2FeAl (CFA) epitaxial films on MgO(001), as a function of film thickness. It was found that the epitaxial CFA films…

Materials Science · Physics 2012-10-23 Wenhong Wang , Enke Liu , Yin Du , Jinglan Chen , Guangheng Wu , Hiroaki Sukegawa , Seiji Mitain , Koichiro Inomata

The nature of low-impurity ferromagnetism remains a challenging problem in the solid-state community due to the strong dependence of magnetic properties on composition, concentration, and structural geometry of diluted alloys. To address…

We study the effect of uniform uniaxial strain on the ground state electronic configuration of a thin film manganite. Our model Hamiltonian includes the double-exchange, the Jahn-Teller electron-lattice coupling, and the antiferromagnetic…

Strongly Correlated Electrons · Physics 2011-07-25 A. Baena , L. Brey , M. J. Calderon