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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…

介观与纳米尺度物理 · 物理学 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

We report a study of demagnetization protocols for frustrated arrays of interacting single domain permalloy nanomagnets by rotating the arrays in a changing magnetic field. The most effective demagnetization is achieved by not only stepping…

Assemblies of magnetic nanoparticles exhibit interesting physical properties arising from the competition of intraparticle dynamics and interparticle interactions. In ordered arrays of magnetic nanoparticles magnetostatic interparticle…

材料科学 · 物理学 2008-10-24 D. Kechrakos , K. N. Trohidou

We present a novel approach to spin manipulation in atomic-scale nanostructures. Our ab initio calculations clearly demonstrate that it is possible to tune magnetic properties of sub-nanometer structures by adjusting the geometry of the…

介观与纳米尺度物理 · 物理学 2009-11-13 O. O. Brovko , P. A. Ignatiev , V. S. Stepanyuk , P. Bruno

Controlling nanoscale interactions to suppress aggregation from short-range attractive forces is a key problem in nanoengineering. Here, we demonstrate a route to modulate Casmir-Lifshitz interactions between anisotropic nanoparticles with…

材料科学 · 物理学 2025-12-24 S Pal , L. M. Woods , C. Persson , I. Brevik , U. De Giovannini , M. Boström

Nanowires play a pivotal role across a spectrum of disciplines such as nanoelectromechanical systems, nanoelectronics, and energy applications. As nanowires continue to diminish in dimensions, their mechanical characteristics are…

材料科学 · 物理学 2023-08-29 Sina Zare Pakzad , Mohammad Nasr Esfahani , B. Erdem Alaca

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,…

介观与纳米尺度物理 · 物理学 2025-04-15 José Holanda

We investigate lateral recoil forces exerted on nanoparticles located near plasmonic platforms with in-plane nonreciprocal response. To this purpose, we first develop a comprehensive theoretical framework based on the Lorentz force within…

光学 · 物理学 2023-02-01 N. K. Paul , J. S. Gomez-Diaz

Iron-oxide nanoflowers (NFs) are one of the most efficient nanoheaters for magnetic hyperthermia therapy (MHT). However, the physics underlying the spin texture of disordered iron-oxide nanoparticles beyond the single-domain limit remains…

介观与纳米尺度物理 · 物理学 2025-07-04 Elizabeth M Jefremovas , Lisa Calus , Jonathan Leliaert

We study the magnetic properties of cylindrical ferromagnetic core - antiferromagnetic shell nanowires using Monte Carlo simulations and a classical Heisenberg Hamiltonian in order to elucidate the impact of the oxidized shell on the…

介观与纳米尺度物理 · 物理学 2017-06-26 A. Patsopoulos , D. Kechrakos

Employment of the non-trivial proximity effect in superconductor/ferromagnet (S/F) heterostructures for the creation of novel superconducting devices requires accurate control of magnetic states in complex thin-film multilayers. In this…

We show that the curvature of nanomagnets can be used to induce chiral textures in the magnetization field. Among the phenomena related to the interplay between geometry and magnetic behavior at nanomagnets, an effective curvature-induced…

介观与纳米尺度物理 · 物理学 2017-04-05 Smiljan Vojkovic , Vagson L. Carvalho-Santos , Jakson M. Fonseca , Alvaro S. Nunez

Strain-clocked dipole-coupled nanomagnetic logic is an energy-efficient Boolean logic paradigm whose progress has been stymied by its propensity for high error rates. In an effort to mitigate this problem, we have studied the effect of…

介观与纳米尺度物理 · 物理学 2016-07-26 Md Mamun Al-Rashid , Jayasimha Atulasimha , Supriyo Bandyopadhyay

Using Atomic Force Microscopes (AFM) to manipulate nano-objects is an actual challenge for surface scientists. Basic haptic interfacesbetween the AFM and experimentalists have already been implemented. Themulti-sensory renderings (seeing,…

图形学 · 计算机科学 2010-05-31 Sylvain Marliere , Daniela Urma , Jean-Loup Florens , Florence Marchi

Magnetic nanoparticles with Neel surface anisotropy, different internal structures, surface arrangements and elongation are modelled as many-spin systems. The results suggest that the energy of many-spin nanoparticles cut from cubic…

统计力学 · 物理学 2008-05-06 R. Yanes , O. Chubykalo-Fesenko , H. Kachkachi , D. A. Garanin , R. Evans , R. W. Chantrell

It was experimentally observed that both magnetic anisotropy and spin-orbit interaction strength change when the magnetization of the nanomagnet is reversed. This indicates a variation in spin-orbit interaction strength depending on whether…

介观与纳米尺度物理 · 物理学 2024-07-10 Vadym Zayets

We investigate localization effects in zigzag graphene nanoribbons with quasiperiodic Fibonacci-type edge extensions, accounting for electron-electron interactions. We employ a tight-binding model that includes first- and…

介观与纳米尺度物理 · 物理学 2026-05-15 Diego B. Fonseca , Anderson L. R. Barbosa , Luiz Felipe C. Pereira

Hyperfine interactions, magnetic interactions between the spins of electrons and nuclei, in graphene and related carbon nanostructures are studied. By using a combination of accurate first principles calculations on graphene fragments and…

材料科学 · 物理学 2008-04-09 Oleg V. Yazyev

Geometric effects in curvilinear nanomagnets can enable chiral, anisotropic and even magnetoelectric responses. Here, we study the effects of magnetic frustration in curvilinear (quasi-)1D magnets represented by spin chains arranged along…

介观与纳米尺度物理 · 物理学 2025-01-30 Oleksandr V. Pylypovskyi , Enrico Di Benedetto , Carmine Ortix , Denys Makarov

Investigation of the magnetic switching and magnetoresistive behaviour of nanoscale spin valve elements (SVs) of varying physical parameters such as shape, element size, dimensional aspect ratio, and array size is of vital importance for…

介观与纳米尺度物理 · 物理学 2024-07-16 Swapnil Barman