caa a22 4500 445380926 CHVBK 20180317143017.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1007/s10948-010-0995-2 doi (NATIONALLICENCE)springer-10.1007/s10948-010-0995-2 Effect of Substrates on Superconducting Properties of MgB2 Thick Films Fabricated by Spraying Method [Elektronische Daten] [M. Ozabaci, M. Aksan, M. Yakinci] MgB2 thick films have been prepared on Al2O3, MgO and SrTiO3 ceramic substrates using the spray method with two different heat-treatment cycles, 925 °C with 10min (GroupA) and 610 °C with 24h (GroupB). The structural/microstructural (XRD, SEM) and transport (R-T, MR-T) properties of the films prepared were investigated. XRD analysis showed that the films in GroupsA andB consisted mainly of MgB2, but the peaks originating from the substrates were also observed in films fabricated on the Al2O3 substrate. From scanning electron microscopy, it was seen that the surface of MgB2 thick films prepared is not sufficiently homogeneous. Some cracks and heaps with different sizes were observed. The best electrical results were obtained for films in GroupA on Al2O3 substrate. The T c value for films in GroupA was found to be 36.1K, 36K and 35K, for Al2O3, MgO and SrTiO3 substrates, respectively. No superconducting state was reached for films in GroupB on the SrTiO3 substrate. In all the films which showed a superconducting state, the magnetic field strongly affected T c. Atail in the resistance curves was observed with increasing magnetic field for films in GroupA on the MgO and SrTiO3 substrates. At magnetic fields above 1T for films in GroupA on the SrTiO3 substrate and above 2T for films in GroupA on the MgO substrate, the zero-resistance temperature, T 0, was not obtained. Springer Science+Business Media, LLC, 2010 MgB2 thick film nationallicence Spraying method nationallicence Ceramic substrate nationallicence Ozabaci M. Scientific and Technological Research Center, IBTAM, Inonu University, Malatya, Turkey aut Aksan M. Scientific and Technological Research Center, IBTAM, Inonu University, Malatya, Turkey aut Yakinci M. Scientific and Technological Research Center, IBTAM, Inonu University, Malatya, Turkey aut Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/1-2(2011-01-01), 357-363 1557-1939 24:1-2<357 2011 24 10948 https://doi.org/10.1007/s10948-010-0995-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10948-010-0995-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ozabaci M. Scientific and Technological Research Center, IBTAM, Inonu University, Malatya, Turkey aut NATIONALLICENCE 700 1- Aksan M. Scientific and Technological Research Center, IBTAM, Inonu University, Malatya, Turkey aut NATIONALLICENCE 700 1- Yakinci M. Scientific and Technological Research Center, IBTAM, Inonu University, Malatya, Turkey aut NATIONALLICENCE 773 0- Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/1-2(2011-01-01), 357-363 1557-1939 24:1-2<357 2011 24 10948 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer