INIFTA 05425
INSTITUTO DE INVESTIGACIONES FISICO-QUIMICAS TEORICAS Y APLICADAS
Unidad Ejecutora - UE
artículos
Título:
Effects of coexisting spin disorder and antiferromagnetism on the magnetic behavior of nanostructured (Fe79Mn21)1xCux alloys
Autor/es:
M. MIZRAHI; A. F. CABRERA; S. J. STEWART; J. DESIMONI
Revista:
JOURNAL OF APPLIED PHYSICS
Editorial:
AMER INST PHYSICS
Referencias:
Lugar: New York; Año: 2014 vol. 115 p. 2139041 - 2139047
ISSN:
0021-8979
Resumen:
We report a magnetic study on nanostructured (Fe79Mn21)1xCux (0.00x0.30) alloys usingstatic magnetic measurements. The alloys are mainly composed by an antiferromagneticfcc phaseand a disordered region that displays a spin-glass-like behavior. The interplay between theantiferromagnetic and magnetically disordered phases establishes an exchange anisotropy thatgives rise to a loop shift at temperatures below the freezing temperature of moments belonging tothe disordered region. The loop shift is more noticeable as the Cu content increases, which alsoenhances the spin-glass-like features. Further, in the x¼0.30 alloy the alignment imposed byapplied magnetic fields higher than 4 kOe prevail over the configuration determined by thefrustration mechanism that characterizes the spin glass-like phase.
