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Magnetism is a key driving force controlling several thermodynamic and kinetic properties of Fe-Cr systems. We present a newly-developed TB model for Fe-Cr, where magnetism is treated beyond the usual collinear approcimation. A major…

Materials Science · Physics 2016-03-25 R Soulairol , C Barreteau , Chu-Chun Fu

Electronic structure and magnetic properties of Fe$_3$Se$_4$ are calculated using the density functional approach. Due to the metallic properties, magnetic moments of the iron atoms in two nonequivalent positions in the unit cell are…

Materials Science · Physics 2022-07-05 L. V. Begunovich , M. M. Korshunov , S. G. Ovchinnikov

We report results of a magnetic characterization of [Cu$_{30}$Ni$_{70}$(6nm)]$_{20}$ (x=1-7nm) superlattices using Polarized Neutron Reflectometry (PNR) and SQUID magnetometry. The study has shown that the magnetic moment of the structures…

Parity- and time-reversal-symmetry violating interaction constants required for the interpretation of a recent measurement (arXiv:1704.07928 [physics.atom-ph]) of corresponding symmetry violations in the $\Omega=1$ (${^3\Delta}_1$) science…

Atomic Physics · Physics 2017-10-18 Timo Fleig

We report measurements of the temperature dependence specific heat, magnetic susceptibility in single crystals of the series of intermetallic compounds Tb$_{1-x}$Y$_x$RhIn$_5$ (nominal concentrations $x= 0.15, 0.30, 0.40, 0.50$ and $0.70$).…

Magnetization measurements were carried out in the in field-cooled (FC) and in zero-field-cooled (ZFC) conditions versus temperature, T, and external magnetic field, H, on a sigma-phase Fe47Mo53 compound. Analysis of the measured M_FC and…

Strongly Correlated Electrons · Physics 2019-03-27 Stanisław M. Dubiel , Maria Bałanda , Israel Felner

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…

In the tight-binding approximation the Harper like equation describing an electron in 3D crystal subject to a uniform magnetic field is obtained. It is supposed that the vector H can be oriented along several directions in the lattice. The…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 V. Ya. Demikhovskii , A. A. Perov , D. V. Khomitsky

Multiferroic rare earth manganites attracted recent attention because of the coexistence of different types of magnetic and ferroelectric orders resulting in complex phase diagrams and a wealth of physical phenomena. The coupling and mutual…

Strongly Correlated Electrons · Physics 2007-05-23 B. Lorenz , C. R. dela Cruz , F. Yen , Y. Q. Wang , Y. Y. Sun , C. W. Chu

In ferromagnetic metals, the interconversion of spin and charge currents via the spin Hall effect and its inverse can depend on the angle between the ferromagnets magnetization and the spin current polarization direction. Here, such a…

Materials Science · Physics 2019-03-27 Joel Cramer , Andrew Ross , Samridh Jaiswal , Lorenzo Baldrati , Romain Lebrun , Mathias Kläui

The electronic origin of the huge magnetostructural effect in layered Fe-As compounds is elucidated using LiFeAs as a prototype. The crucial feature of these materials is the strong covalent bonding between Fe and As, which tends to…

Materials Science · Physics 2008-12-19 K. D. Belashchenko , V. P. Antropov

Magnetoelectric (ME) interactions in layered structures of magnetostrictive and piezoelectric phases are mediated by mechanical deformation. Here we discuss the frequency dependence of ME coupling in bilayers and trilayers of Permendur, a…

Materials Science · Physics 2009-11-10 U. Laletsin , N. Padubnaya , G. Srinivasan , C. P. DeVreugd

The effect of a magnetic field on Mott-Hubbard systems is investigated by studying the half-filled Hubbard model in the limit of infinite dimensions. A first-order metamagnetic transition between the strongly correlated metal and the Mott…

Condensed Matter · Physics 2009-10-22 Laurent Laloux , Antoine Georges , Werner Krauth

Magnetic properties of multicomponent alloys depend sensitively on the degree of atomic order on the different crystallographic sites. In this work we demonstrate the magnetic contrast between bulk and thin-film samples of the Heusler alloy…

Materials Science · Physics 2023-09-21 Ross Smith , Zsolt Gercsi , Rui Zhang , Katarzyna Estera Siewierska , Karsten Rode , J. M. D. Coey

The structural, electronic, and magnetic properties of half-Heusler alloys CKMg and SiKMg are studied by using first-principle density functional theory. The calculations reveal the SiKMg alloy is a half-metallic ferromagnet with the…

Materials Science · Physics 2015-06-11 Gang Lei , Xiao-Xiong Liu , Lei Li , Qiang Gao , Xian-Ru Hu , Jian-bo Deng

We show the effect of composition on structural and magnetic characteristics of pure phase polycrystalline Ga<2-x>Fe<x>O<3> (GFO) for compositions between 0.8 <= x <= 1.3. X-ray analysis reveals that lattice parameters of GFO exhibit a…

Materials Science · Physics 2013-08-01 Somdutta Mukherjee , Vishal Ranjan , Rajeev Gupta , Ashish Garg

Multiferroic TbMnO3 is investigated using x-ray diffraction in high magnetic fields. Measurements on first and second harmonic structural reflections due to modulations induced by the Mn and Tb magnetic order are presented as function of…

Strongly Correlated Electrons · Physics 2008-07-29 J. Strempfer , B. Bohnenbuck , I. Zegkinoglou , N. Aliouane , S. Landsgesell , M. v. Zimmermann , D. N. Argyriou

The three Mn I lines at 17325, 17339 and 17349 \AA~are among the 25 strongest lines ($\log(gf)>0.5$) in the H-band. They are all heavily broadened due to hyperfine structure and the profiles of these lines have so far not been understood.…

Solar and Stellar Astrophysics · Physics 2015-06-19 Martin Andersson , Jon Grumer , Nils Ryde , Richard Blackwell-Whitehead , Roger Hutton , Yaming Zou , Per Jönsson , Tomas Brage

The hyperfine structure in the 6p2-configuration in lead has been analysed and the results is compared with calculations. The hyperfine anomaly and improved values of the nuclear magnetic moment for four lead isotopes is obtained, using the…

Atomic Physics · Physics 2014-07-14 J. R. Persson

The superconductivity of graphite-sulfur composites is highly anisotropic and associated with the graphite planes. The superconducting state coexists with the ferromagnetism of pure graphite, and a continuous crossover from superconducting…

Superconductivity · Physics 2009-11-10 S. Moehlecke , Y. Kopelevich , M. B. Maple
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