148 citations · 233 across the 9 of their papers we have counts for
7 papers · 1 filter
Ferromagnetic resonance response in square artificial spin ice: roles of geometry in vertex dynamics and magnetic configurations
G. A. Gomez-Iriarte, D. E. Gonzalez-Chavez, R. L. Sommer +1
Artificial spin ice (ASI) represents a class of uniquely structured superlattices comprising geometrically arranged interacting nanomagnets. This arrangement facilitates the explor…
Micromagnetic study of skyrmion stability in confined magnetic structures with perpendicular anisotropy
R. L. Novak, F. Garcia, E. R. P. Novais +2
Skyrmions are emerging topological spin structures that are potentially revolutionary for future data storage and spintronics applications. The existence and stability of skyrmions…
Indirect switching of vortex polarity through magnetic dynamic coupling
G. B. M. Fior, E. R. P. Novais, J. P. Sinnecker +2
Magnetic vortex cores exhibit a gyrotropic motion, and may reach a critical velocity, at which point they invert their z-component of the magnetization. We performed micromagnetic…
Circular single domains in hemispherical small size Permalloy clusters
Clodoaldo I. L. de Araujo, Jakson M. Fonseca, João P. Sinnecker +3
We have studied ferromagnetic Permalloy clusters obtained by electrodeposition on n-type silicon. Magnetization measurements reveal hysteresis loops almost independent on temperatu…
Interaction between magnetic vortex cores in a pair of nonidentical nanodisks
J. P. Sinnecker, H. Vigo-Cotrina, F. Garcia +2
Interacting magnetic nanoobjects constitute one key component for many proposed spintronic devices, from microwave nano-oscillators to magnetic memory elements. For this reason, th…
Magnetic vortex echoes: application to the study of arrays of magnetic nanostructures
F. Garcia, J. P. Sinnecker, E. R. P. Novais +1
We propose the use of the gyrotropic motion of vortex cores in nanomagnets to produce a magnetic echo, analogous to the spin echo in NMR. This echo occurs when an array of nanomagn…
Morphology and magnetism of multifunctional nanostructured -FeO films: Simulation and experiments
R. F. Neumann, M. Bahiana, L. G. Paterno +4
This paper introduces a new approach for simulating magnetic properties of nanocomposites comprising magnetic particles embedded in a non-magnetic matrix, taking into account the 3…