Nanotubes of rare-earth manganese oxide

LEVY; LEYVA; TROIANI; SANCHEZ

APPLIED PHYSICS LETTERS

AMER INST PHYSICS

Lugar: New York; Año: 2003 p. 5247 - 5249

0003-6951

We report the synthesis of rare-earth manganese-oxide-based nanotubes. The pore wetting techniquewas used to obtain structures of nominal composition La0.325Pr0.300Ca0.375MnO3 with 800 nmexternal diameter, 4000 nm length, and wall thickness below 100 nm exhibiting magnetic andmagnetoresistive behavior below 200 K, including nonvolatile memory. Walls are found to beformed by small crystals of approximately 20 nm. Structures obtained using different diameter ofpores, as small as 100 nm, have a similar aspect ratio. Results show the realization of nanotubes ofmanganites exhibiting intrinsic phase separation. © 2003 American Institute of Physics.