Electrical Transport and Magnetic Properties of La 2/3 Pb 1/3 MnO 3 Thin Films
M. Baran, M. Berkowski, J. Fink-Finowicki, S.J. Lewandowski, H. Szymczak, R. Szymczak
Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
S.I. Khartchev and Yu.V. Medvedev
Physico-Technical Institute, National Academy of Sciences, Donetsk, Ukraine
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The magnetic and transport properties of epitaxial La 2/3 Pb 1/3 CuO 3 thin films deposited on SrLaGaO 4 substrate using dc magnetron sputtering technique are reported. The giant magnetoresistance effect (of about 50% at magnetic field of 1T) was observed near the Curie temperature. Several mechanisms responsible for temperature dependence of resistivity are discussed. The effect of annealing was studied. It shifted the Curie temperature to the lower value, probably, because of the loss of oxygen.
DOI: 10.12693/APhysPolA.105.115
PACS numbers: 75.30.--m, 72.15.Gd, 75.70.Pa