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In artificial spin ice (ASI), magnetic interactions between nanomagnets determine both the stable states and the switching pathways under an applied field. Here, first-order reversal curve (FORC) measurements are used to map how these…

Materials Science · Physics 2026-04-28 Brindaban Ojha , Matías P. Grassi , Vassilios Kapaklis

Artificial spin ice has become a valuable tool for understanding magnetic interactions on a microscopic level. The strength in the approach lies in the ability of a synthetic array of nanoscale magnets to mimic crystalline materials,…

Materials Science · Physics 2011-12-23 Stephen A. Daunheimer , Olga Petrova , Oleg Tchernyshyov , John Cumings

Magnetic skyrmions are novel topological spin textures on the nanoscale, and significant efforts have been taken to improve their zero-field density at room temperature (RT). In this work, we reported an approach of improving zero-field…

Strongly Correlated Electrons · Physics 2020-06-12 Mangyuan Ma , Calvin Ching Ian Ang , Yong Li , Weiliang Gan , Wen Siang Lew , Fusheng Ma

Combined first order reversal curve (FORC) analyses of the magnetization (M-FORC) and magnetoresistance (MR-FORC) have been employed to provide a comprehensive study of the M-MR correlation in two canonical systems: a NiFe/Cu/FePt pseudo…

Materials Science · Physics 2014-09-12 Randy K. Dumas , Peter K. Greene , Dustin A. Gilbert , Li Ye , Chaolin Zha , Johan Åkerman , Kai Liu

We present results of ferromagnetic resonance (FMR) experiments and micromagnetic simulations for a distorted, 2D Kagome artificial spin ice. The distorted structure is created by continuously modulating the 2D primitive lattice translation…

Mesoscale and Nanoscale Physics · Physics 2021-01-04 Ali Frotanpour , Justin Woods , Barry Farmer , Amrit P. Kaphle , Lance E. De Long , Loris Giovannini , Federico Montoncello

This study is focused on the possibility to extend the use of the first-order reversal curve (FORC) diagram method to rate-dependent hysteresis. The FORCs for an amorphous magnetic wire was measured with an inductometric experimental setup…

Materials Science · Physics 2016-11-09 Dorin Cimpoesu , Ioan Dumitru , Alexandru Stancu

We have measured the angular dependence of ferromagnetic resonance (FMR) spectra for Fibonacci-distorted, Kagome artificial spin ice (ASI). The number of strong modes in the FMR spectra depend on the orientation of the applied DC magnetic…

Mesoscale and Nanoscale Physics · Physics 2021-05-12 Ali Frotanpour , Justin Woods , Barry Farmer , Amrit P. Kaphle , Lance E. DeLong

We have studied frustrated kagome arrays and unfrustrated honeycomb arrays of magnetostatically-interacting single-domain ferromagnetic islands with magnetization normal to the plane. The measured pairwise spin correlations of both lattices…

Magnetic frustration effects in artificial kagome arrays of nanomagnets are investigated using x-ray photoemission electron microscopy and Monte Carlo simulations. Spin configurations of demagnetized networks reveal unambiguous signatures…

Mesoscale and Nanoscale Physics · Physics 2011-02-15 N. Rougemaille , F. Montaigne , B. Canals , A. Duluard , D. Lacour , M. Hehn , R. Belkhou , O. Fruchart , S. El Moussaoui , A. Bendounan , F. Maccherozzi

The magnetometric technique of First Order Reversal Curve (FORC) analysis, applicable to hysteretic systems, is introduced to the study of superconducting samples. Some typical superconducting structures in FORC diagram are identified, and…

Superconductivity · Physics 2023-05-30 E. R. Di Lascio

We present numerical studies of dipolar spin ice in the presence of a magnetic field slightly tilted away from the [111] axis. We find a first-order transition from a kagome ice to a $\mathbf{q}=$X state when the external field is tilted…

Statistical Mechanics · Physics 2016-06-08 Wen-Han Kao , Peter Holdsworth , Ying-Jer Kao

Artificial spin ices (ASIs) are designable arrays of interacting nanomagnets that span a wide range of magnetic phases associated with a number of spin lattice models. Here, we demonstrate that the phase of an artificial kagome spin ice can…

Mesoscale and Nanoscale Physics · Physics 2022-11-04 Breno Cecchi , Nathan Cruz , Marcelo Knobel , Kleber Roberto Pirota

Motivated by the observation of partial magnetic order in kagome-based magnets, we study the classical kagome Ising antiferromagnet, known as kagome spin ice, including further-neighbor interactions at zero and finite temperature. While the…

Strongly Correlated Electrons · Physics 2024-06-04 Eric C. Andrade , Matthias Vojta

We report angular-dependent spin-wave spectroscopy on kagome artificial spin ice made of large arrays of interconnected Ni80Fe20 nanobars. Spectra taken in saturated and disordered states exhibit a series of resonances with characteristic…

Mesoscale and Nanoscale Physics · Physics 2017-07-26 V. S. Bhat , F. Heimbach , I. Stasinopoulos , D. Grundler

The first-order reversal curve (FORC) method is applied to the two-dimensional kinetic Ising model. For the system size and magnetic field chosen, the system reverses by the homogeneous nucleation and growth of many droplets. This makes the…

Statistical Mechanics · Physics 2007-05-23 D. T. Robb , M. A. Novotny , P. A. Rikvold

The magnetization behaviour of the soft Cobalt Ferrite-hard Strontium Ferrite nanocomposite is tuned from the non exchange spring nature to the exchange spring nature, by controlling the particle size of the soft Cobalt Ferrite in the…

Materials Science · Physics 2015-06-15 Debangsu Roy , Sreenivasulu K , P S Anil Kumar

Artificial spin ices are engineered arrays of dipolarly coupled nanobar magnets. They enable direct investigations of fascinating collective phenomena from their diverse microstates. However, experimental access to ground states in the…

We present a numerical study of magnetic ordering in spin ice on kagome, a two-dimensional lattice of corner-sharing triangles. The magnet has six ground states and the ordering occurs in two stages, as one might expect for a six-state…

Strongly Correlated Electrons · Physics 2012-11-21 Gia-Wei Chern , Oleg Tchernyshyov

Magnetic frustration effects in artificial kagome arrays of nanomagnets with out-of-plane magnetization are investigated using Magnetic Force Microscopy and Monte Carlo simulations. Experimental and theoretical results are compared to those…

Mesoscale and Nanoscale Physics · Physics 2015-06-22 I. A. Chioar , N. Rougemaille , A. Grimm , O. Fruchart , E. Wagner , M. Hehn , D. Lacour , F. Montaigne , B. Canals

We investigate experimentally magnetic frustration effects in thermally active artificial kagome spin ice. Starting from a paramagnetic state, the system is cooled down below the Curie temperature of the constituent material. The resulting…

Mesoscale and Nanoscale Physics · Physics 2015-06-23 I. A. Chioar , B. Canals , D. Lacour , M. Hehn , B. Santos Burgos , T. O. Mentes , A. Locatelli , F. Montaigne , N. Rougemaille
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