Página Inicial CNEA Laboratorio TANDAR Página Inicial TANDAR Historia del acelerador TANDAR Web interno Web mail
Inicio » Actividades I+D > Publicaciones 2007 > Phase diagram of La5/8-yNdyCa3/8MnO3 man...
artículo con referato
"Phase diagram of La5/8-yNdyCa3/8MnO3 manganites"
J. Sacanell, P. Levy, A.G. Leyva, F. Parisi and L. Ghivelder
J. Phys.: Condens. Matter 19(18) (2007) 186226/1-10
We report a detailed study of the electric transport and magnetic properties of the La5/8-yNdyCa3/8MnO3 manganite system. Substitution of La3+ by smaller Nd3+ ions reduces the mean ionic radius of the A-site ion. We have studied samples in the entire range between La-rich and Nd-rich compounds (0.1 < y < 0.625). Results of dc magnetization and resistivity show that doping destabilizes the ferromagnetic (FM) character of the pure La compound and triggers the formation of a phase-separated state at intermediate doping. We have also found evidence of a dynamical behaviour within the phase-separated state. A phase diagram is constructed, summarizing the effect of chemical substitution on the system.
Av. Gral Paz y Constituyentes, San Martín, Pcia. de Buenos Aires, Argentina
Tel: (54-11) 6772-7007 - Fax: (54-11) 6772-7121