INVESTIGADORES
SANCHEZ Rodolfo Daniel
artículos
Título:
Room-temperature Ferromagnetism in La2/3Sr1/3MnO3 nanoparticles assembled-nanotube
Autor/es:
J. CURIALE; R. D. SANCHEZ; H. E. TROIANI; A. G. LEYVA; P. LEVY.
Revista:
APPLIED PHYSICS LETTERS
Editorial:
American Institute of Physics
Referencias:
Lugar: Nueva York; Año: 2005 vol. 87 p. 1 - 3
ISSN:
0003-6951
Resumen:
We present magnetic and transmission electron microscopy experiments on the double-exchangecompound La2/3Sr1/3MnO3, nanostructured to form tubes with 700 nm of external diameter.Microscopy reveals that their walls are formed by a compact agglomerate of grains, whose sizes arearound 20 nm. The study of magnetic properties of randomly oriented nanotubes shows that thetransition from the ferromagnetic to paramagnetic state is at TC=320 K, close to the bulk samplevalue. They exhibit hysteresis in magnetic field loops. The coercive field at 90 K is around 130 Oe,and estimated single-domain size is around 20 nm.
