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A next-generation memory device utilizing a three-dimensional nanowire system requires the reliable control of domain wall motion. In this letter, domain walls are studied in cylindrical nanowires consisting of alternating segments of…

A Hall magnetometer with variable sensitivity is constructed to measure the magnetic properties of magnetic nanoparticles manufactured by different methods. This novel magnetometer can also be used to measure bulk materials and samples in…

We extend the foil winding homogenization method to magnetic field conforming formulations. We first propose a full magnetic field foil winding formulation by analogy with magnetic flux density conforming formulations. We then introduce the…

Computational Engineering, Finance, and Science · Computer Science 2026-05-19 Louis Denis , Elias Paakkunainen , Paavo Rasilo , Sebastian Schöps , Benoît Vanderheyden , Christophe Geuzaine

Magnetic microscopy that combines nanoscale spatial resolution with picosecond scale temporal resolution uniquely enables direct observation of the spatiotemporal magnetic phenomena that are relevant to future high-speed, high-density…

Mesoscale and Nanoscale Physics · Physics 2021-07-07 Chi Zhang , Jason M. Bartell , Jonathan C. Karsch , Isaiah Gray , Gregory D. Fuchs

Very short and well shaped magnetic field pulses can be generated using ultra-relativistic electron bunches at Stanford Linear Accelerator. These fields of several Tesla with duration of several picoseconds are used to study the response of…

Other Condensed Matter · Physics 2009-09-29 Ioan Tudosa

Non-linear electrical transport studies at high-pulsed magnetic fields, above the range accessible by DC magnets, are of direct fundamental relevance to the physics of superconductors, domain-wall, charge-density waves, and topological…

A method is advanced allowing for fast regulation of magnetization direction in magnetic nanosystems. The examples of such systems are polarized nanostructures, magnetic nanomolecules, magnetic nanoclusters, magnetic graphene, dipolar and…

Applied Physics · Physics 2022-10-19 V. I. Yukalov , E. P. Yukalova

Spin transfer torque-induced high-frequency dynamics of single thin cobalt-layer nanopillars of circular and elliptical shape have been observed directly. Two types of precessional modes can be identified as a function of magnetic field…

Materials Science · Physics 2012-01-13 N. Müsgens , S. Fahrendorf , T. Maassen , A. Heiss , J. Mayer , B. Özyilmaz , B. Beschoten , G. Güntherodt

Various coils for transcranial magnetic stimulation (TMS) are widely available for clinical and research use. These coils are almost all designed as air coils, which require large levels of energy to achieve a given magnetic flux density…

Medical Physics · Physics 2025-11-04 Max Koehler , Akshata Sangle , Stefan M. Goetz

Background: Calculation of the electric field induced by transcranial magnetic stimulation (TMS) in the brain requires accurate models of the stimulation coils. Reconstructing models from the measured magnetic fields of coils so far worked…

Other Quantitative Biology · Quantitative Biology 2021-12-30 Kristoffer Hougaard Madsen , Maria Drakaki , Axel Thielscher

Magnetic tunnel junctions operating in the superparamagnetic regime are promising devices in the field of probabilistic computing, which is suitable for applications like high-dimensional optimization or sampling problems. Further, random…

Mesoscale and Nanoscale Physics · Physics 2021-03-24 Christopher Safranski , Jan Kaiser , Philip Trouilloud , Pouya Hashemi , Guohan Hu , Jonathan Z Sun

This paper presents the conceptual design of a high-voltage pulser intended to generate 30-T magnetic fields for magneto-inertial fusion experiments at the OMEGA facility. The pulser uses a custom capacitor bank and two externally triggered…

Plasma Physics · Physics 2019-08-14 R. V. Shapovalov , R. B. Spielman , G. Brent , P. -A. Gourdain

The study of 3D magnetic nanostructures has uncovered a range of rich phenomena including the stabilization and control of topological spin textures using nanoscale curvature, dynamic effects allowing controlled spin-wave emission, and…

Mesoscale and Nanoscale Physics · Physics 2024-03-08 Joseph Askey , Matthew Oliver Hunt , Lukas Payne , Arjen van den Berg , Ioannis Pitsios , Alaa Hejazi , Wolfgang Langbein , Sam Ladak

We report a novel scheme to generate laser-induced, ultrafast, intense (Tesla scale), spatially isolated, magnetic fields. Three-dimensional particle-in-cell simulations show that a femtosecond azimuthally-polarized infrared vector beam,…

Coherent control over electron dynamics in atoms and molecules using high-intensity circularly-polarized laser pulses gives rise to current loops, resulting in the emission of magnetic fields. We propose and demonstrate with ab-initio…

This paper investigates the magnetic fields produced by a three-coil system, focusing on how different mesh resolutions affect the accuracy of the results. Using both the Poisson solver, as well as a numerical approach based on the solution…

Superparamagnetic colloidal particles can be reversibly assembled into wheel-like structures called microwheels ($\mu$wheels) which roll on surfaces due to friction and can be driven at user-controlled speeds and directions using rotating…

Applied Physics · Physics 2020-06-05 E. J. Roth , C. J. Zimmermann , D. Disharoon , T. O. Tasci , D. W. M. Marr , K. B. Neeves

We report the results of experimental investigations of controlled domain wall (DW) pinning in a ferromagnetic nanowire (NW) by stray fields of two uniformly magnetized bistable ferromagnetic nanoparticles (NPs) placed on either side of the…

Mesoscale and Nanoscale Physics · Physics 2018-07-04 V. L. Mironov , O. L. Ermolaeva , E. V. Skorohodov

We present a method to measure the magnetic properties of monolayers and ultra-thin films of magnetic material. The method is based on low energy muon spin rotation and $\beta$-detected nuclear magnetic resonance measurements. A spin probe…

Mesoscale and Nanoscale Physics · Physics 2012-06-07 Z. Salman , S. J. Blundell