Sol-gel derived versus pulsed laser deposited epitaxial La0.67Ca0.33MnO3 films: structure, transport and effects of post-annealing
2004 (English)In: Thin Solid Films, no 467, 112-116 p.Article in journal (Refereed) Published
Epitaxial La0.67Ca0.33MnO3 films have been prepared on LaAl03 crystals by pulsed laser deposition (PLD) and by a novel all-alkoxide sol-gel technique. Different out-of-plane lattice parameters are found for the as-prepared films, and scanning electron microscopy shows a more porous structure for sol-gel films as compared to PLD films. These differences are largely removed by post annealing at 1000 °C. ) Transport measurements show maximum temperature coefficient of resistivity of 8.2% K-1 at 258 K (PLD) and 6.1% K-1 at 241 K (sol-gel) and colossal magnetoresistance at 560 kA/m of 35% at 263 K (PLD) and 32% at 246 K (sol-gel).
Place, publisher, year, edition, pages
2004. no 467, 112-116 p.
Sol-gel, Pulsed laser deposition, Post-annealing
IdentifiersURN: urn:nbn:se:uu:diva-67420OAI: oai:DiVA.org:uu-67420DiVA: diva2:95331