Magnetotransport properties of epitaxial strain-less La0.7Ba0.3MnO3 thin films (Articolo in rivista)

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  • Magnetotransport properties of epitaxial strain-less La0.7Ba0.3MnO3 thin films (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1063/1.2430770 (literal)
Alternative label
  • Orgiani P.; Guarino A.; Aruta C.; Adamo C.; Galdi A.; Petrov A.Y.; Savo R.; Maritato L. (2007)
    Magnetotransport properties of epitaxial strain-less La0.7Ba0.3MnO3 thin films
    in Journal of applied physics; American Institute Of Physics (AIP), Melville (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Orgiani P.; Guarino A.; Aruta C.; Adamo C.; Galdi A.; Petrov A.Y.; Savo R.; Maritato L. (literal)
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  • http://link.aip.org/link/japiau/v101/i3/p033904 (literal)
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  • 101 (literal)
Rivista
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  • 5 (literal)
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  • 3 (literal)
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  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Salerno, CNR, INFM, I-84081 Baronissi, SA, Italy; Univ Salerno, Dept Phys, I-84081 Baronissi, SA, Italy; Univ Roma Tor Vergata, CNR, INFM, I-00133 Rome, Italy; Univ Roma Tor Vergata, Dept Mech Engn, I-00133 Rome, Italy (literal)
Titolo
  • Magnetotransport properties of epitaxial strain-less La0.7Ba0.3MnO3 thin films (literal)
Abstract
  • We have fabricated La0.7Ba0.3MnO3 (LBMO) thin films by a pulsed laser deposition technique using a low partial pressure (10(-2) mbar) of O-2+5% O-3. In order to study the role of oxygen content in the transport properties, the temperature dependence of the resistivity has been measured as a function of the temperature and the time of a post-annealing process. Strain-less LBMO thin films deposited on SrTiO3 substrates show a metal insulator transitions temperature T-MI similar or equal to 345 K (equal to that found in bulk material). A T-2.5-power law has been measured in R(T) at low temperature, supporting the disorder-induced single magnon scattering scenario. At high temperature (T > T-MI) an activated behavior characteristic of polaronic carriers has been measured. Magnetotransport properties show a metal-like behavior and a negative magnetoresistance (MR) in the whole temperature range. With an external magnetic field of 70 kOe, the MR reaches the maximum value of 170% at about 320 K. (c) 2007 American Institute of Physics. (literal)
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