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artículo con referato
"Nanotubes of Rare Earth Manganase Oxide"
P. Levy, A.G. Leyva, H.E. Troiani and R.D. Sánchez
Appl. Phys. Lett. 83(25) (2003) 5247-5249
We report the synthesis of rare earth manganese oxide based nanotubes. The pore wetting technique was used to obtain structures of nominal composition La0.325Pr0.300Ca0.375MnO3 with 800 nm external diameter, 4000 nm length and wall thickness below 100 nm exhibitin magnetic and magnetoresistive behaviour below 200 K, including non volatile memory. Walls are found to be formed by small crystals of approximately 20 nm. Structures obtained using different diameter of pores, as small as 100 nm, have a similar aspect ratio. Results show for the first time the realization of nanotubes of manganites exhibiting intrinsic phase separation.
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