| Texto completo | |
| Autor(es): |
Vidal, F.
[1]
;
Zheng, Y.
[1]
;
Schio, P.
[2, 1]
;
Bonilla, F. J.
[1]
;
Barturen, M.
[1, 3, 4]
;
Milano, J.
[1, 3, 4]
;
Demaille, D.
[1]
;
Fonda, E.
[5]
;
de Oliveira, A. J. A.
[2]
;
Etgens, V. H.
[1, 6]
Número total de Autores: 10
|
| Afiliação do(s) autor(es): | [1] UPMC Univ Paris 6, CNRS, UMR 7588, Inst NanoSci Paris, F-75005 Paris - France
[2] Univ Fed Sao Carlos, Dept Fis, BR-13565905 Sao Paulo - Brazil
[3] UNCU CAB, CNEA CONICET, San Carlos De Bariloche, Rio Negro - Argentina
[4] UNCU CAB, Inst Balseiro, San Carlos De Bariloche, Rio Negro - Argentina
[5] Synchrotron SOLEIL, F-91192 Gif Sur Yvette - France
[6] UVSQ, F-78035 Versailles - France
Número total de Afiliações: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Physical Review Letters; v. 109, n. 11 SEP 14 2012. |
| Citações Web of Science: | 25 |
| Resumo | |
The mechanism of magnetization reversal has been studied in a model system of self-assembled cobalt nanowires with a 3 nm diameter. The structure, orientation and size of grains within the nanowires could be determined by high resolution transmission electron microscopy. The magnetic properties were probed using static and dynamic magnetization measurements. Micromagnetic modeling based on the structural analysis allows us to correlate the structure and the magnetic behavior of the wires, revealing competition between shape anisotropy, magnetocrystalline anisotropy and exchange in the localized reversal within Co hcp oriented grains. These results provide direct experimental evidence of the link between anisotropy fluctuations and reversal localization in nanowires. (AU) | |
| Processo FAPESP: | 07/08649-5 - Propriedades magnéticas e eletrônicas em óxidos semicondutores dopados com metais de transição |
| Beneficiário: | Pedro Schio de Noronha Muniz |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |