Página Inicial CNEA Laboratorio TANDAR Página Inicial TANDAR Historia del acelerador TANDAR Web interno Web mail
Inicio » Actividades I+D > Publicaciones 2004 > Half-Metallic Character and Electronic P...
artículo con referato
"Half-Metallic Character and Electronic Properties of Inverse Magnetoresistant Fe1-xCoxSi Alloys"
J.A. Guevara, V. Vildosola, J. Milano and A.M. Llois
Phys. Rev. B 69(18) (2004) 184422/1-6
Based on ab-initio calculations we find that Fe1-xCoxSi alloys in the Fe-rich region behave as disordered ferromagnetic half metal. Half metallicity can explain the recently found electronic, magnetic and transport properties. We can also determine a sharp transition from the paramagnetic metallic behavior to the ferromagnetic half metallic state as a functions of Co concentration. At concentrations higher than 0.25 the system starts to segregate Co from Fe atoms, this giving rise to the disappearance of half metallicity and to reflect it in the decreasing magnetic moment.
Av. Gral Paz y Constituyentes, San Martín, Pcia. de Buenos Aires, Argentina
Tel: (54-11) 6772-7007 - Fax: (54-11) 6772-7121