Zobrazeno 1 - 10
of 25
pro vyhledávání: '"S. A. Leonel"'
Autor:
J. C. S. Gomes, D. Toscano, E. L. M. Paixão, C. I. L. de Araujo, F. Sato, R. A. Dias, P. Z. Coura, S. A. Leonel
Publikováno v:
AIP Advances, Vol 8, Iss 9, Pp 095017-095017-7 (2018)
Various spintronic devices use single-domain magnetic nanoparticles as unit cells. Herein, we investigated interparticle dipole-dipole interactions in arrays of Permalloy single-domain nano-ellipses through micromagnetic simulations. In this study, t
Externí odkaz:
https://doaj.org/article/da98d42bf1f94e74bfac103ad2d7c893
Autor:
Clodoaldo I. L. de Araujo, Danilo Toscano, Josiel Carlos Souza Gomes, Maxwel Gama Monteiro, P. Z. Coura, Fernando Sato, S. A. Leonel, Isaac Andrade Santece, João Paulo Almeida de Mendonça
Publikováno v:
Quarks: Brazilian Electronic Journal of Physics, Chemistry and Materials Science. 3:50-65
Skyrmions are considered promising candidates to be the information carriers in the next generation of data storage and logic devices, due to its stability and easy control under the application of an electric current. For future technological applic
Autor:
P. Z. Coura, D. Toscano, Maxwel Gama Monteiro, S. A. Leonel, Fernando Sato, E. L. M. Paixão, J. C. S. Gomes
Publikováno v:
Journal of Magnetism and Magnetic Materials. 451:639-646
Understanding and controlling of domain wall motion in magnetic nanowires is extremely important for the development and production of many spintronic devices. It is well known that notches are able to pin domain walls, but their pinning potential st
Publikováno v:
Journal of Magnetism and Magnetic Materials. 443:252-260
This work proposes the use of tower-like structures (small diameter cylinders) embedded on nanodiscs in order to reduce the minimum size of disc diameter to sustain a vortex as ground state. By simulating the dynamics of nanostructured discs of Py-79
Publikováno v:
Journal of Magnetism and Magnetic Materials. 426:396-404
Numerical simulations have been performed to study the magnetization reversal in Permalloy nano-ellipses, under combined in-plane magnetic fields along the longitudinal and the transverse directions. We have considered nano-ellipses with two differen
Publikováno v:
The European Physical Journal B. 91
In this work we estimate surface energy values in nanostructures, with the use of a tight-binding potential with the second moment approximation. We propose a model to calculate surface energy using differences in cohesive energy. Our model is fully
Autor:
E. L. M. Paixão, D. Toscano, Fernando Sato, J. C. S. Gomes, P. Z. Coura, D. V. P. Massote, S. A. Leonel, C. I. L. de Araujo
Publikováno v:
Applied Physics Letters. 114:212403
In this work, we perform investigations of the competition between domain-wall pinning and attraction by antinotches and finite device borders. The conditions for optimal geometries, which can attain a stable domain-wall pinning, are presented. This
Publikováno v:
Journal of Magnetism and Magnetic Materials. 324:2342-2348
In this work we report a numerical Monte Carlo study of the behavior of a magnetic nano-disk put over an antiferromagnetic substrate. Three approaches were considered for describe the substrate: (1) A stacked antiferromagnetic configuration, (2) an I
Publikováno v:
Physics Procedia. 28:99-104
Using spin dynamics simulations we study and present a model for pointlike magnetic impurities in nano-magnets based on the exchange coupling between these pointlike impurities and their neighbors. We observed two possible types of impurities, acting
Autor:
P. Z. Coura, R. A. Dias, D. Toscano, Fernando Sato, E. L. M. Paixão, C. I. L. de Araujo, S. A. Leonel, J. C. S. Gomes
Publikováno v:
AIP Advances, Vol 8, Iss 9, Pp 095017-095017-7 (2018)
Various spintronic devices use single-domain magnetic nanoparticles as unit cells. Herein, we investigated interparticle dipole-dipole interactions in arrays of Permalloy single-domain nano-ellipses through micromagnetic simulations. In this study, t