Structural, Magnetic and Transport Properties οf NdBaCo2O5+x Thin Films Deposited by Magnetron Sputtering

E. Vlakhov a,b, R. Szymczak c, M. Baran c, K. Piotrowski c, A. Szewczyk c, W. Paszkowicz c, L. Lobanovskii d, S. Matyajasik b, K. Nenkov b,e and H. Szymczak c a Institute of Solid State Physics, Bulgarian Academy of Sciences, BG-1784 Sofia, Bulgaria b International Laboratory for High Magnetic Fields and Low Temperatures, 53-529 Wrocław, Poland c Institute of Physics, Polish Academy of Sciences, PL-02-668 Warsaw, Poland d Scientific-Practical Materials Research Centre of NAS of Belarus, 220072 Minsk, Belarus e Leibniz-Institut fur Festkörper- und Werkstofforschung Dresden, 01171 Dresden, Germany

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For the first time, thin films of NdBaCo2O5+x were deposited by RF magnetron sputtering on different substrates. The films deposited on SrLaAlO4(001) substrates exhibited highly textured structure with c-axis directed out-of-plane. Magnetic measurements M vs. T of three NdBaCo2O5+x/SrLaAlO4(001) films revealed successively paramagnetic-ferromagnetic-antiferromagnetic transitions with decrease in temperature. Their paramagnetic Curie-Weiss temperatures were estimated to be in the range of TC=100-116 K. Resistivity of the cobaltite thin film exhibited insulating behavior and the best fit was found for the variable range hopping mechanism.

DOI: 10.12693/APhysPolA.115.89 PACS numbers: 75.70.Ak, 64.75.St, 64.75.Lm