Search Results - "de Araujo, C. I. L"

Effects of magnetic monopoles charge on the cracking reversal processes in artificial square ices by de Paiva, T. S., Rodrigues, J. H., Mól, L. A. S., Pereira, A. R., Borme, J., Freitas, P. P., de Araujo, C. I. L.

“…In this paper we perform nanofabrication of square artificial spin ices with different lattice parameters, in order to investigate the roles of vertex…”
Get full text

Realization of Rectangular Artificial Spin Ice and Direct Observation of High Energy Topology by Ribeiro, I. R. B., Nascimento, F. S., Ferreira, S. O., Moura-Melo, W. A., Costa, C. A. R., Borme, J., Freitas, P. P., Wysin, G. M., de Araujo, C. I. L., Pereira, A. R.

“…In this work, we have constructed and experimentally investigated frustrated arrays of dipoles forming two-dimensional artificial spin ices with different…”
Get full text

Magnetic vortex crystal formation in the antidot complement of square artificial spin ice by de Araujo, C. I. L., Silva, R. C., Ribeiro, I. R. B., Nascimento, F. S., Felix, J. F., Ferreira, S. O., Mól, L. A. S., Moura-Melo, W. A., Pereira, A. R.

“…We have studied ferromagnetic nickel thin films patterned with square lattices of elongated antidots that are negative analogues of square artificial spin ice…”
Get full text

Effect of the dipolar coupling on the precessional magnetization switching in two-dimensional arrays of single-domain nano-ellipses by Gomes, J. C. S., Toscano, D., Paixão, E. L. M., de Araujo, C. I. L., Sato, F., Dias, R. A., Coura, P. Z., Leonel, S. A.

“…Various spintronic devices use single-domain magnetic nanoparticles as unit cells. Herein, we investigated interparticle dipole-dipole interactions in arrays…”
Get full text

Magnetic monopole free motion in two-dimensional artificial spin ice by Duarte, D. G., de Oliveira, L. B., Nascimento, F. S., Moura-Melo, W. A., Pereira, A. R., de Araujo, C. I. L.

“…Magnetic monopole motion (without its partner in a pair) as a function of external magnetic fields is presented as a fingerprint of freedom of these emergent…”
Get full text

Investigation of domain wall pinning by square anti-notches and its application in three terminals MRAM by de Araujo, C. I. L., Gomes, J. C. S., Toscano, D., Paixão, E. L. M., Coura, P. Z., Sato, F., Massote, D. V. P., Leonel, S. A.

“…In this work, we perform investigations of the competition between domain-wall pinning and attraction by antinotches and finite device borders. The conditions…”
Get full text

Tuning magnetic monopole population and mobility in unidirectional array of nanomagnets as a function of lattice parameters by Gonçalves, R. S., Loreto, R. P., de Paiva, T. S., Borme, J., Freitas, P. P., de Araujo, C. I. L.

“…Sets of nanomagnets are often utilized to mimic cellular automata in the design of nanomagnetic logic devices or frustration and emergence of magnetic…”
Get full text

Low-field microwave absorption and magnetoresistance in iron nanostructures grown by electrodeposition on n-type lightly doped silicon substrates by Felix, J.F., Figueiredo, L.C., Mendes, J.B.S., Morais, P.C., Araujo, C.I.L. de

“…In this study we investigate magnetic properties, surface morphology and crystal structure in iron nanoclusters electrodeposited on lightly doped (100) n-type…”
Get full text

Measuring Magnetoresistance in a 2D Intergranular Magnetic-Semiconducting Material by Ballestar, A., de Araujo, C. I. L., Delatorre, R. G., Pasa, A. A., Garcia, N.

“…A new 2D intergranular semiconducting-magnetic material obtained by depositing magnetic clusters of permalloy in a doped Si surface, is presented. The…”
Get full text

Magnetic properties and Curie temperature tuning in copper-Permalloy alloys obtained by electrodeposition by Teixeira, H.A., Araujo, C.I.L. de

“…Permalloy copper (CuPy) structures, produced by low cost vacuum free pulsed electrodeposition technique, present relevant results as magnetic material…”
Get full text

Electrical Spin Injection from Ferromagnetic Nanocontacts into Nondegenerated Silicon at Low Temperatures by de Araujo, C. I. L., Tumelero, M. A., Avila, J. I., Viegas, A. D. C., Garcia, N., Pasa, A. A.

“…We present results on the magnetoresistance of the system Ni/Al 2 O 3 /Si/Al 2 O 3 /Ni fabricated in lateral nanostructures. The substrate n-type Si is a…”
Get full text

Room temperature two terminal tunnel magnetoresistance in lateral graphene transistor by de Araujo, C. I. L, Teixeira, H. A, Toro, O. O, Liao, C, Borme, J, Benetti, L. C, Schafer, D, Brandt, I. S, Ferreira, R, Alpuim, P, Freitas, P. P, Pasa, A. A

“…Nanoscale 2021 We investigate the behavior of both pure spin and spin-polarized currents measured with four probe non-local and two probe local configurations…”
Get full text

Macroscopic magnetic monopoles in a 3D-printed mechano-magnet by Teixeira, H.A., Bernardo, M.F., Nascimento, F.S., Saccone, M.D., Caravelli, F., Nisoli, C., de Araujo, C.I.L.

“…The notion of magnetic monopoles has puzzled physicists since the introduction of Maxwell’s Equations. Famously, Dirac had hypothesized them in the context of…”
Get full text

Suppression of the skyrmion Hall effect in planar nanomagnets by the magnetic properties engineering: Skyrmion transport on nanotracks with magnetic strips by Toscano, D., Mendonça, J.P.A., Miranda, A.L.S., de Araujo, C.I.L., Sato, F., Coura, P.Z., Leonel, S.A.

“…•Nanotracks with magnetic strips are proposed to transport skyrmions.•Attractive and repulsive interactions via magnetic properties engineering.•The skyrmion…”
Get full text

Traps for pinning and scattering of antiferromagnetic skyrmions via magnetic properties engineering by Toscano, D, Santece, I. A, Guedes, R. C. O, Assis, H. S, Miranda, A. L. S, de Araujo, C. I. L, Sato, F, Coura, P. Z, Leonel, S. A

“…Journal of Applied Physics 127, 193902 (2020) Micromagnetic simulations have been performed to investigate the controllability of the skyrmion position in…”
Get full text

Suppression of the skyrmion Hall effect in planar nanomagnets by the magnetic properties engineering: Skyrmion transport on nanotracks with magnetic strips by Toscano, D, Mendonça, J. P. A, Miranda, A. L. S, de Araujo, C. I. L, Sato, F, Coura, P. Z, Leonel, S. A

“…Micromagnetic simulations have been performed to investigate the suppression of the skyrmion Hall effect in nanotracks with their magnetic properties…”
Get full text

Naked-eye visualization of geometric frustration effects in macroscopic spin ices by Gonçalves, R. S, Gomes, A. C. C, Loreto, R. P, de Araujo, C. I. L, Nascimento, F. S, Moura-Melo, W. A, Pereira, A. R

“…We study planar rectangular-like arrays composed by macroscopic dipoles (magnetic bars with size around a few centimeters) separated by lattice spacing a and b…”
Get full text

Investigation of domain wall pinning by square anti-notches and its applications in three terminals MRAM by de Araujo, C. I. L, Gomes, J. C. S, Toscano, D, Paixao, E. L. M, Coura, P. Z, Sato, F, Massote, D. V. P, Leonel, S. A

“…In this work we perform investigations of the competition between domain-wall pinning and attraction by anti-notches and finite device borders. The conditions…”
Get full text

Experimental and theoretical evidences for the ice regime in planar artificial spin ices by Loreto, R. P, Nascimento, F. S, Gonçalves, R. S, Borme, J, Cezar, J. C, Nisoli, C, Pereira, A. R, de Araujo, C. I. L

“…R P Loreto et al. J. Phys.: Condens. Matter 31 025301 (2019) In this work, we explore a kind of geometrical effect in the thermodynamics of artificial spin…”
Get full text

Manipulation of magnetic skyrmions in a locally modified synthetic antiferromagnetic racetrack by Loreto, R.P., Zhang, X., Zhou, Y., Ezawa, M., Liu, X., de Araujo, C.I.L.

“…•Skyrmion dynamics in a synthetic AF racetrack with locally modified regions.•Skyrmion manipulation by building locally modified regions in a…”
Get full text