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Mesoscopic magnetic states in metallic alloys with strong electronic correlations : a percolative scenario for CeNi/sub 1-x/Cu/sub x/
dc.contributor.author | Marcano, N. | pt_BR |
dc.contributor.author | Gómez Sal, J.C. | pt_BR |
dc.contributor.author | Espeso, José Ignacio | pt_BR |
dc.contributor.author | De Teresa, J.M. | pt_BR |
dc.contributor.author | Algarabel, P.A. | pt_BR |
dc.contributor.author | Paulsen, C. | pt_BR |
dc.contributor.author | Iglesias, Jose Roberto | pt_BR |
dc.date.accessioned | 2014-08-09T02:11:35Z | pt_BR |
dc.date.issued | 2007 | pt_BR |
dc.identifier.issn | 0031-9007 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/99400 | pt_BR |
dc.description.abstract | We present evidence for the existence of magnetic clusters of approximately 20 Å in the strongly correlated alloy system CeNi1-xCux (0.7 ≤ x ≤ 0.2) based on small angle neutron scattering experiments as well as the occurrence of staircaselike hysteresis cycles at very low temperature (100 mK). An unusual feature is the observation of long-range ferromagnetic order below the cluster-glass transition without any indication of a sharp transition at a Curie temperature. These observations strongly support a phenomenological model where a percolative process connects both magnetic states. The model can account for all the puzzling data previously obtained in this system, providing a new perspective with regard to the magnetic ground state of other alloyed compounds with small magnetic moments or weak ferromagnetism with intrinsic disorder effects. | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Physical review letters. Vol. 98, no. 16 (Apr. 2007), 166406 4p. | pt_BR |
dc.rights | Open Access | en |
dc.subject | Ligas de cério | pt_BR |
dc.subject | Ligas de cobre | pt_BR |
dc.subject | Materiais ferromagnéticos | pt_BR |
dc.subject | Aglomerados metálicos | pt_BR |
dc.subject | Difração de nêutrons | pt_BR |
dc.subject | Momentos magnéticos | pt_BR |
dc.subject | Histerese | pt_BR |
dc.subject | Transicao vitrea | pt_BR |
dc.title | Mesoscopic magnetic states in metallic alloys with strong electronic correlations : a percolative scenario for CeNi/sub 1-x/Cu/sub x/ | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 000595640 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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