Página Inicial CNEA Laboratorio TANDAR Página Inicial TANDAR Historia del acelerador TANDAR Web interno Web mail
Inicio » Actividades I+D > Publicaciones 2010 > Magnetoresistance effects in (La,Sr)MnO3...
artículo con referato
"Magnetoresistance effects in (La,Sr)MnO3 bicrystalline films"
G. Alejandro, L.B. Steren, H. Pastoriza, D. Vega, M. Granada, J.C. Rojas Sanchez, M. Sirena and B. Alascio
J. Phys.: Condens. Matter 22(34) (2010) 346007/1-10
The angular dependence of the magnetoresistance effect has been measured on bicrystalline La0.75Sr0.25MnO3 films. The measurements have been performed on an electronically lithographed Wheatstone bridge. The study of the angular dependence of both the magnetoresistance and the resistance of single-crystalline and grain-boundary regions of the samples allowed us to isolate two contributions of low-field magnetoresistance in manganites. One of them is associated with the spin-orbit effect, i.e. the anisotropic magnetoresistance of ferromagnetic compounds, and the other one is related to spin-disorder regions at the grain boundary. Complementary x-ray diffraction, ferromagnetic resonance and low temperature magnetization experiments contribute to the characterization of the magnetic anisotropy of the samples and the general comprehension of the problem.
Av. Gral Paz y Constituyentes, San Martín, Pcia. de Buenos Aires, Argentina
Tel: (54-11) 6772-7007 - Fax: (54-11) 6772-7121