Zobrazeno 1 - 10
of 95
pro vyhledávání: '"Coura, P. Z."'
Autor:
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.
Publikováno v:
Journal of Applied Physics 127, 193902 (2020)
Micromagnetic simulations have been performed to investigate the controllability of the skyrmion position in antiferromagnetic nanotracks with their magnetic properties modified spatially. In this study we have modeled magnetic defects as local varia
Externí odkaz:
http://arxiv.org/abs/2003.00907
Autor:
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 strategically modified. In particular, we study two categories of magnetically modified nanotracks.
Externí odkaz:
http://arxiv.org/abs/1912.03403
Autor:
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 for optimal geometries, which can attain a stable domain-wall pinning, are presented. This
Externí odkaz:
http://arxiv.org/abs/1905.04504
In this work we have used micromagnetic simulations to report four ways to build traps for magnetic skyrmions. Magnetic defects have been modeled as local variations in the material parameters, such as the exchange stiffness, saturation magnetization
Externí odkaz:
http://arxiv.org/abs/1810.03754
We have studied the magnetization reversal process in FM/AFM bilayer structures through of spin dynamics simulation. It has been observed that the magnetization behavior is different at each branch of the hysteresis loop as well as the exchange-bias
Externí odkaz:
http://arxiv.org/abs/1403.5279
We use Monte Carlo simulation to study the vortex nucleation on magnetic nanodots at low temperature. In our simulations, we have considered a simple microscopic two-dimensional anisotropic Heisenberg model with term to describe the anisotropy due to
Externí odkaz:
http://arxiv.org/abs/1010.4541
Publikováno v:
J.Appl.Phys.107, 053903 (2010)
The existence of nonlinear objects of the vortex type in two-dimensional magnetic systems presents itself as one of the most promising candidates for the construction of nanodevices, useful for storing data, and for the construction of reading and wr
Externí odkaz:
http://arxiv.org/abs/1010.4534
Autor:
Silva, R. L., Pereira, A. R., Moura-Melo, W. A., Silva, R. C., Oliveira-Neto, N. M., Leonel, S. A., Coura, P. Z.
Publikováno v:
Physical Review B 78, 054423 (2008)
We investigate the influence of artificial defects (small holes) inserted into magnetic nanodisks on the vortex core dynamics. One and two holes (antidots) are considered. In general, the core falls into the hole but, in particular, we would like to
Externí odkaz:
http://arxiv.org/abs/0909.4515
In this work we propose an extension to the analytical one-dimensional model proposed by E. Gnecco (Phys. Rev. Lett. 84:1172) to describe friction. Our model includes normal forces and the dependence with the angular direction of movement in which th
Externí odkaz:
http://arxiv.org/abs/0712.0373
Autor:
Pereira, A. R., Moura, A. R., Moura-Melo, W. A., Carneiro, D. F., Leonel, S. A., Coura, P. Z.
Publikováno v:
Journal of Applied Physics 101 (2007) 034310
How stable vortex-like magnetization in magnetic nanodisks with small aspect ratio ($L/R<<1$) is affected by two antidots is investigated analytically and by Monte Carlo simulations. For suitable ranges of the physical parameters this vortex presents
Externí odkaz:
http://arxiv.org/abs/cond-mat/0612070