Yakinci, M. E.Aydogdu, Y.Aksan, M. A.Balci, Y.Altin, S.2024-08-042024-08-0420111557-1939https://doi.org/10.1007/s10948-010-1005-4https://hdl.handle.net/11616/95422Superconducting MgB2 thin films have been prepared using Ultrasonic Spray Pyrolysis (USP) system. 2.4 MHz USP system and various solutions which contain different Mg, B and de-ionized water and LAPSA concentrations and gas atmospheres were used to obtain 500 nm to 1.0 mu m thick MgB2 films. Some of the films produced were heat treated in-situ in the spraying chamber during deposition and some of them were annealed ex-situ in the tube furnace under Mg vapor. T (c) and T (zero) of the samples were obtained to be 39.5 K and 37.4, 39.5 and 37.0 for ex-situ and in-situ prepared films, respectively. The highest critical current density was obtained to be 4.12x10(6) A cm(-2) for ex-situ annealed films and 4.01x10(6) A cm(-2) for in-situ produced films. The result obtained indicated that the ex-situ preparation method provides improvement in the transport and magnetic properties.eninfo:eu-repo/semantics/closedAccessMgB2 superconductorUltrasonic spray pyrolysisNano-sized spherical MgB2 powdersSuperconducting MgB2 powdersArticle241-224124510.1007/s10948-010-1005-42-s2.0-80052157694N/AWOS:000289855700037Q4