168072 20260126155509.0 doi 10.1007/s11837-015-1509-2 sideral 91955 ART-2015-91955 eng Aksan, M. A. Effect of Secondary Annealing Process on Critical Current Density in Highly Textured Bi-2212 Superconducting System 2015 Bi-2212 samples prepared by a solid-state reaction technique have been grown from the melt using the laser floating zone method. After annealing the as-grown bars, the samples showed a good grain alignment and a high transport critical current density. Secondary annealing processes were performed on the annealed samples with the aim of producing Bi-2212 phase controlled decomposition. Hence, the Bi-2201 phase and the secondary phases, which act as effective pinning centers, were obtained with the secondary annealing process. After these thermal treatments, the transport critical current densities of samples significantly increased, when compared to the annealed ones. The maximum critical current density was achieved when the samples were subjected to secondary annealing at 680°C for 168 h with an improvement of ~80%, compared to the annealed ones. Moreover, it was found that magnetization of the secondarily annealed samples was also increased. The magnetic critical current densities in these secondary annealed samples were about 3 times higher than the values obtained for the annealed ones. These results clearly indicate that the secondary annealing processes lead to the formation of effective pinning centers in the bulk material. Access copy available to the general public Unrestricted info:eu-repo/grantAgreement/ES/DGA/T12 info:eu-repo/grantAgreement/ES/DGA/T87 info:eu-repo/grantAgreement/ES/MINECO-FEDER/MAT2013-46505-C3-1-R info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 1.798 2015 METALLURGY & METALLURGICAL ENGINEERING 13 / 73 = 0.178 2015 Q1 T1 MINING & MINERAL PROCESSING 5 / 21 = 0.238 2015 Q1 T1 MINERALOGY 11 / 29 = 0.379 2015 Q2 T2 MATERIALS SCIENCE, MULTIDISCIPLINARY 116 / 270 = 0.43 2015 Q2 T2 0.963 2015 Materials Science (miscellaneous) 2015 Q1 Engineering (miscellaneous) 2015 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Madre, M. A. Universidad de Zaragoza (orcid)0000-0002-0794-3998 Rasekh, S. (orcid)0000-0003-3466-9952 Constantinescu, G. (orcid)0000-0002-1614-1962 Torres, M. A. Universidad de Zaragoza (orcid)0000-0003-3995-5763 Diez, J. C. Universidad de Zaragoza (orcid)0000-0001-9995-6368 Sotelo, A. Universidad de Zaragoza (orcid)0000-0001-7056-0546 Yakinci, M. E. 5002 305 Universidad de Zaragoza Dpto. Ingeniería Diseño Fabri. Área Expresión Gráfica en Ing. 5001 065 Universidad de Zaragoza Dpto. Ciencia Tecnol.Mater.Fl. Área Cienc.Mater. Ingen.Metal. 67, 9 (2015), 2079-2086 JOM JOM 1047-4838 1085991 http://zaguan.unizar.es/record/168072/files/texto_completo.pdf Postprint 734252 http://zaguan.unizar.es/record/168072/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:168072 articulos driver 2026-01-26-14:49:48 ARTICLE