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The magnetization reversal of three-segment cylindrical nanoelements comprising of alternating nanowire and nanotube sections is investigated by means of Monte Carlo simulations. Such nanoelements may feature a three-state behaviour with an…

Mesoscale and Nanoscale Physics · Physics 2015-05-05 R. F. Neumann , M. Bahiana , S. Allende , D. Altbir , D. Görlitz , K. Nielsch

Materials that have a hysteretic response to an external field are essential in modern information storage and processing technologies. The magnetization curves of several natural and artificial materials have previously been measured and…

Applied Physics · Physics 2018-04-18 Andres Concha , David Aguayo , Paula Mellado

We examine different models and methods for studying finite-temperature magnetic hysteresis in nanoparticles and ultrathin films. This includes micromagnetic results for the hysteresis of a single magnetic nanoparticle which is misaligned…

Materials Science · Physics 2007-05-23 M. A. Novotny , D. T. Robb , S. M. Stinnett , G. Brown , P. A. Rikvold

The effect of dipolar interactions in hexagonal arrays of Ni nanowires has been investigated by means of Monte Carlo simulations combined with a scaling technique, which allows the investigation of the internal structure of the wires. A…

Materials Science · Physics 2009-11-11 M. Bahiana , S. Allende , F. S. Amaral , D. Altbir

We have observed distinct temperature-dependent magnetization reversal modes in a perpendicular (Co/Pd)4/Co/Cu/(Co/Ni)4/Co pseudo-spin-valve, which are correlated with spin-transport properties. At 300 K, magnetization reversal occurs by…

Materials Science · Physics 2013-07-12 J. E. Davies , D. A. Gilbert , S. M. Mohseni , R. K. Dumas , J. Åkerman , Kai Liu

We study ground-state orderings of particles in classical lattice-gas models of adsorption on crystal surfaces. In the considered models, the energy of adsorbed particles is a sum of two components, each one representing the energy of a…

Statistical Mechanics · Physics 2009-10-31 Janusz Jedrzejewski , Jacek Miekisz

The behavior of a uniformly magnetized ferronematic slab is investigated numerically in a situation in which an external magnetic field is applied parallel and antiparallel, respectively, to its initial magnetization direction. The employed…

Soft Condensed Matter · Physics 2018-09-10 Grigorii Zarubin , Markus Bier , Siegfried Dietrich

This research delves into the critical effects of magnetic interactions in low-dimensional systems, offering invaluable insights that deepen our comprehension of magnetic behavior at the nanoscale. By implementing this innovative approach,…

Mesoscale and Nanoscale Physics · Physics 2025-04-15 José Holanda

We examine the effect of the dynamics of the internal magnetic field on the staircase magnetization curves observed in large-spin molecular magnets. We show that the size of the magnetization steps depends sensitively on the intermolecular…

Statistical Mechanics · Physics 2009-10-31 Anthony Hams , Hans De Raedt , Seiji Miyashita , Keiji Saito

We present quantum phase diagrams for the antiferromagnetic long-range Ising model with a linear coupling to a single bosonic mode on the square and triangular lattice. For zero coupling, the ground-state magnetization forms a devil's…

Strongly Correlated Electrons · Physics 2025-03-10 Jan Alexander Koziol , Anja Langheld , Kai Phillip Schmidt

The nonlinear response to an external electric field is studied for classical non-interacting charged particles under the influence of a uniform magnetic field, a periodic potential, and an effective friction force. We find numerical and…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Jan Wiersig , Kang-Hun Ahn

We investigated experimentally non-equilibrium state of a two-dimensional electron gas (2DEG) in the quantum Hall effect (QHE) regime, studying the hysteresis of magnetoresistance of a 2DEG with a constriction. The large amplitude of the…

Mesoscale and Nanoscale Physics · Physics 2015-04-10 M. V. Budantsev , D. A. Pokhabov , A. G. Pogosov , E. Yu. Zhdanov , A. K. Bakarov , A. I. Toropov

Using the two-level approximation of the energy barrier, we perform extensive kinetic Monte Carlo simulations to probe the relaxation characteristics in a two-dimensional ($L^{}_x\times L^{}_y$) array of magnetic nanoparticle as a function…

Materials Science · Physics 2022-03-23 Manish Anand

A chain of dipole-coupled elongated magnetic islands whose long axes are oriented perpendicular to the chain is studied for its magnetization properties. With a magnetic field applied perpendicular to the chain, the competition between…

Mesoscale and Nanoscale Physics · Physics 2026-03-20 G. M. Wysin

The continued increase in areal densities in magnetic recording makes it crucial to understand magnetization reversal in nanoparticles. We present finite-temperature micromagnetic simulations of hysteresis in Fe nanopillars with the long…

Materials Science · Physics 2009-11-10 G. Brown , S. M. Stinnett , M. A. Novotny , P. A. Rikvold

The work is devoted to investigation of the collective behavior of the regular rectangular lattices of the NiFe nanoparticles caused by the dipole-dipole interaction between them. The samples was prepared by the method of the electron…

Finite-temperature micromagnetics simulations are employed to study the magnetization-switching dynamics driven by a field applied at an angle to the long axis of an iron nanopillar. A bi-modal distribution in the switching times is…

Statistical Mechanics · Physics 2015-05-13 S. H. Thompson , G. Brown , P. A. Rikvold , M. A. Novotny

We study field-driven dynamics of spins with antiferromagnetic interaction along the links of a complex substrate geometry, which is modeled by graphs of a controlled connectivity distribution. The magnetization reversal occurs in…

Statistical Mechanics · Physics 2007-05-23 B. Tadic , K. Malarz , K. Kulakowski

A detailed numerical analysis of the magnetization reversal processes in multisegmented nanowire arrays was developed. The nanowires have a long aspect ratio and are formed by magnetic and non-magnetic sections alternately arranged in such…

Mesoscale and Nanoscale Physics · Physics 2015-07-09 E. A. Rando , S. Allende

We investigate experimentally and theoretically the magnetization reversal process in one-dimensional magnonic structures composed of permalloy nanowires of the two different widths and finite length arranged in a periodic and quasiperiodic…

Mesoscale and Nanoscale Physics · Physics 2019-02-20 K. Szulc , F. Lisiecki , A. Makarov , M. Zelent , P. Kuświk , H. Głowiński , J. W. Klos , M. Munzenberg , R. Gieniusz , J. Dubowik , F. Stobiecki , M. Krawczyk