Asymmetric giant magnetoresistance in Co10Cu90 magnetic granular alloys
Data(s) |
29/12/2009
29/12/2009
1995
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Resumo |
We have observed a type of giant magnetoresistance (GMR) in magnetic granular Co10Cu90 alloys. The asymmetric GMR depends strongly on the size of magnetic Co particles, which exhibit superparamagnetic behavior at given measured temperature. The asymmetric GMR points to a metastable state that develops when the sample is field-cooled, which is lost after recycling. We propose that high-field cooling produces more effective parallel alignment of small unblocked Co particle moments and interfacial magnetizations, which contributes to the further decrease of the resistance in comparison with the samples zero-field-cooled, and then applied to the same field. |
Formato |
4 p. application/pdf |
Identificador |
0163-1829 http://hdl.handle.net/2445/10653 117648 |
Idioma(s) |
eng |
Publicador |
The American Physical Society |
Relação |
Reproduccio digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.52.R6987 Physical Review B, 1995, vol. 52, núm. 10, p. 6987-6990 |
Direitos |
(c) The American Physical Society, 1995 info:eu-repo/semantics/openAccess |
Palavras-Chave | #Metalls de transició #Propietats magnètiques #Reologia #Transition metals #Magnetic properties #Rheology |
Tipo |
info:eu-repo/semantics/article |