INVESTIGADORES
LEVY Pablo Eduardo
artículos
Título:
Structural and electrical characterisation of La0.5Ca0.5MnO3 thin films grown by pulsed laser deposition
Autor/es:
D. RUBI, S. DUHALDE, M. C. TERZZOLIA, G. LEYVAB, G. POLLA, P. LEVY, F. PARISI AND R. R. URBANOC
Revista:
PHYSICA B - CONDENSED MATTER
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: New York; Año: 2002 vol. 320 p. 86 - 89
ISSN:
0921-4526
Resumen:
Available online 20 March 2002.
Abstract
Thin films of perovskite manganite, with nominal composition La0.5Ca0.5MnO3, have been prepared by pulsed laser deposition on (1 0 0) SrTiO3, (1 0 0) LaAlO3, (1 0 0) Si and YSZ/CeO2-buffered
(1 0 0) Si substrates. Structural and electrical characterisation was
performed on the films. The magneto-transport properties of all the
thin films depart from the bulk behaviour. The LCMO film grown on
buffered Si shows an insulatormetallic transition around 130150 K
while the one deposited directly on Si displayed a similar behaviour
under a melting field of 1 T. However, that transition is absent in the
films grown on LAO and STO. We suggest that appropriate stress values
induced by the substrate favour the formation of metallic percolative
paths.
Author Keywords: Manganites; Thin films; Strain; La0.5Ca0.5MnO3