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The time and field dependence of the magnetic domain structure at magnetization reversal were investigated by Kerr microscopy in interacting ferromagnetic Co/Pt multilayers with perpendicular anisotropy. Large local inhomogeneous…

Materials Science · Physics 2018-07-26 S. Wiebel , J. P. Jamet , N. Vernier , A. Mougin , J. Ferre , V. Baltz , B. Rodmacq , B. Dieny

By means of the molecular dynamics simulation on gradual cooling processes, we investigate magnetic properties of classical spin systems only with the magnetic dipole-dipole interaction, which we call dipolar systems. Focusing on their…

Statistical Mechanics · Physics 2007-05-23 Ryoko Sugano , Katsuyoshi Matsushita , Akiyoshi Kuroda , Yusuke Tomita , Hajime Takayama

We report on a method to tune the orientation of in-plane magnetic domains and domain walls in thin ferromagnetic strips by manipulating the magnetic anisotropy. Uniaxial in-plane anisotropy is induced in a controlled way by oblique…

Other Condensed Matter · Physics 2007-09-17 S. Cherifi , R. Hertel , A. Locatelli , Y. Watanabe , G. Potdevin , A. Ballestrazzi , M. Balboni , S. Heun

Nanoscale objects often behave differently than their 'normal-sized' counterparts. Sometimes it is enough to be small in just one direction to exhibit unusual features. One example of such a phenomenon is a very specific in-plane magnetic…

Mesoscale and Nanoscale Physics · Physics 2012-10-10 Marek W. Gutowski

The interaction between spherical magnetic nanoparticles is investigated from micromagnetic simulations and ananlysed in terms of the leading dipolar interaction energy between magnetic dipoles. We focus mainly on the case where the…

Materials Science · Physics 2009-04-14 V. Russier

We have investigated surface spin wave states in one-dimensional planar bi-component magnonic crystals, localized on the surfaces resulting from the breaking of the periodic structure. The two systems have been considered: the magnonic…

Computational Physics · Physics 2019-04-16 Justyna Rychły , Jarosław Wojciech Kłos

In this work we studied a two dimensional ferromagnetic system using Monte Carlo simulations. Our model includes exchange and dipolar interactions, a cubic anisotropy term, and uniaxial out-of-plane and in-plane ones. According to the set…

Materials Science · Physics 2014-06-11 O. V. Billoni , S. Bustingorry , M. Barturen , J. Milano , S. A. Cannas

We have investigated the relationship between the domain structure and the magnetic interactions in a series of FePt ferromagnetic thin films of varying thickness. As-made films grow in the magnetically soft and chemically disordered A1…

Materials Science · Physics 2014-02-27 N. Álvarez , E. Sallica Leva , R. C. Valente , M. Vásquez Mansilla , J. Gómez , J. Milano , A. Butera

In the search for rare-earth free permanent magnets, various ideas related to shape anisotropy are being pursued. In this work we assess the limits of shape contributions to the reversal stability using micromagnetic simulations. In a first…

Materials Science · Physics 2016-03-30 Simon Bance , Johann Fischbacher , Thomas Schrefl , Inga Zins , Gotthard Rieger , Caroline Cassignol

Spins in molecular magnets can experience both anisotropic exchange interactions and on-site magnetic anisotropy. In this paper we study the effect of exchange anisotropy on the molecular magnetic anisotropy both with and without on-site…

Materials Science · Physics 2018-12-12 Sumit Haldar , Rajamani Raghunathan , Jean-Pascal Sutter , S. Ramasesha

We study the effect of the shape anisotropy on the magnetic domain configurations of a ferromagnetic semiconductor (Ga,Mn)As/GaAs(001) epitaxial wire as a function of temperature. Using magnetoresistance measurements, we deduce the magnetic…

Materials Science · Physics 2015-06-25 K. Hamaya , T. Taniyama , T. Koike , Y. Yamazaki

In thin magnetic films with strong perpendicular anisotropy and strong demagnetizing field two ordered phases are possible. At low temperatures, perpendicularly oriented magnetic domains form a striped pattern. As temperature is increased…

Materials Science · Physics 2012-12-21 M. C. Ambrose R. L. Stamps

We propose a short overview of a few selected issues of magnetism in reduced dimensions, which are the most relevant to set the background for more specialized contributions to the present Special Issue. Magnetic anisotropy in reduced…

Other Condensed Matter · Physics 2016-08-16 Olivier Fruchart , André Thiaville

Stripe states in multilayer systems with perpendicular polarization are investigated by analytical calculations within a general continuum approach, applicable to ferromagnetic, ferroelectric, or ferroelastic nanoscale superlattices. The…

Materials Science · Physics 2007-05-23 Alexei N. Bogdanov , Ulrich K. Roessler

Using a combination of resonant soft x-ray scattering, magnetometry, x-ray reflectivity and microscopy techniques we have investigated the magnetic properties and microstructure of a series of perpendicular anisotropy Co/Pt multilayer films…

Magnetic anisotropy is one of the important factors in determining magnetic structures. A type of magnetic anisotropy is closely related to the symmetry of crystals. We theoretically investigate magnetic anisotropy and its related magnetic…

Strongly Correlated Electrons · Physics 2024-05-22 Akane Inda , Satoru Hayami

Magnetic axis rotation (MAR) in ferromagnetic (FM) layers is crucial for strain-mediated converse magnetoelectric coupling. Employing the density functional theory (DFT), we computationally study the magnetic anisotropy of selected deformed…

Materials Science · Physics 2022-12-02 Zefeng Cai , Ben Xu

We report on the magnetic properties and the crystallographic structure of the cobalt nanowire arrays as a function of their nanoscale dimensions. X-ray diffraction measurements show the appearance of an in-plane HCP-Co phase for nanowires…

Materials Science · Physics 2009-11-24 J. Sanchez-Barriga , M. Lucas , F. Radu , E. Martin , M. Multigner , P. Marin , A. Hernando , G. Rivero

The role of dipolar interactions and anisotropy are important to obtain, otherwise forbidden, ferromagnetic ordering at finite temperature for ions arranged in two-dimensional (2D) arrays (monolayers). Here we demonstrate that conventional…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 M. K. Mukhopadhyay , M. K. Sanyal , T. Sakakibara , V. Leiner , R. M. Dalgliesh , S. Langridge

The thermodynamics of a spin-1/2 magnetic multilayer system with antiferromagnetic interplanar couplings is studied using the Pair Approximation method. The special attention is paid to magnetocaloric properties, quantified by isothermal…

Materials Science · Physics 2014-09-09 Karol Szałowski , Tadeusz Balcerzak