Zobrazeno 1 - 10
of 147
pro vyhledávání: '"Bahiana M"'
Publikováno v:
Nanotechnology 26, 215701 (2015)
The magnetization reversal of three-segment cylindrical nanoelements comprising of alternating nanowire and nanotube sections is investigated by means of Monte Carlo simulations. Such nanoelements may feature a three-state behaviour with an intermedi
Externí odkaz:
http://arxiv.org/abs/1410.5742
Publikováno v:
EPL 100 (2012) 67002
Using first-principles density-functional calculations, we address the magnetic properties of the ferromagnet/antiferromagnet La(0.67)Sr(0.33)MnO3/BiFeO3(001) heterojunctions, and investigate possible driving mechanisms for a ferromagnetic (FM) inter
Externí odkaz:
http://arxiv.org/abs/1307.4871
Autor:
Neumann, R. F., Bahiana, M., Paterno, L. G., Soler, M. A. G., Sinnecker, J. P., Wen, J. G., Morais, P. C.
Publikováno v:
Journal of Magnetism and Magnetic Materials 347(0), 26 - 32, Elsevier, 2013
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 3D structure of the system in which particles' positions correctly mimi
Externí odkaz:
http://arxiv.org/abs/1108.6099
Publikováno v:
Journal of Applied Physics 105 (2), 023907 (2009)
The hysteresis curves of multilayer microwires consisting of a soft magnetic nucleus, intermediate non-magnetic layers, and an external hard magnetic layer are investigated. The magnetostatic interaction between magnetic layers is proved to give rise
Externí odkaz:
http://arxiv.org/abs/1106.2366
Publikováno v:
Applied Physics Letters 93 (2), 023101 (2008)
The investigation of interactions between magnetic nanotubes is complex and often involves substantial simplifications. In this letter an analytical expression for the magnetostatic interaction, taking into account the geometry of the tubes, has been
Externí odkaz:
http://arxiv.org/abs/1106.2372
Publikováno v:
Applied Physics Letters 98 (2), 022502 (2011)
During the last years great attention has been given to the encapsulation of magnetic nanoparticles. In this work we investigated the stability of small magnetic particles inside magnetic nanotubes. Multisegmented nanotubes were tested in order to op
Externí odkaz:
http://arxiv.org/abs/1106.1410
Publikováno v:
Nanotechnology 18 (2007) 485707
The effect of dipolar interactions among cylindrical nanodots, with a vortex-core magnetic configuration, is analyzed by means of analytical calculations. The cylinders are placed in a N x N square array in two configurations - core oriented parallel
Externí odkaz:
http://arxiv.org/abs/0711.0402
The effect of dipolar interactions in hexagonal arrays of Ni nanowires has been investigated by means of Monte Carlo simulations combined with a scaling technique, which allows the investigation of the internal structure of the wires. A strong depend
Externí odkaz:
http://arxiv.org/abs/cond-mat/0610161
The relative stability of the vortex, onion and ferromagnetic phases in nanorings is examined as a function of the ring geometry. Total energy calculations are carried out analytically, based on simple models for each configuration. Results are summa
Externí odkaz:
http://arxiv.org/abs/cond-mat/0608037
The hysteresis curves of systems composed of small interacting magnetic particles, regularly placed on stacked layers, are obtained with Monte Carlo simulations. The remanence as a function of temperature, in interacting systems, presents a peak that
Externí odkaz:
http://arxiv.org/abs/cond-mat/0409374