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Modification of physical and structural properties of Bi1.8Pb0.4Sr2Ca2.2Cu3Oy ceramics induced by annealing

AutorÖzkurt, B.; Madre, M. A.; Sotelo, A.; Diez, J. C.
Palabras claveHysteresis loops
Electrical resistivity
Fecha de publicación2013
CitaciónPhysica B: Condensed Matter 426: 85-89 (2013)
ResumenThe effect of annealing temperatures on the structural and superconducting properties of Bi-2223 ceramics prepared by the solid state reaction method has been investigated. Annealing temperatures were varied from 730 to 830 °C while time was kept constant at 50 h. Electrical resistivity studies showed that samples annealed at 830 °C for 50 h have the lowest resistivity values at room temperature while critical transition temperature increases slightly. XRD data have shown that all samples contain Bi-2223 as the major one. The highest diamagnetism behavior has been found in the sample treated at 830 °C. In addition, Jc values of the samples, calculated from the hysteresis loops using the Bean's model, decreased with increasing annealing temperatures until 780 °C and increase for the highest annealing temperature which is 830 °C for this work. © 2013 Elsevier B.V. All rights reserved.
Versión del editorhttp://dx.doi.org/10.1016/j.physb.2013.05.034
Identificadoresdoi: 10.1016/j.physb.2013.05.034
issn: 0921-4526
e-issn: 1873-2135
Aparece en las colecciones: (ICMA) Artículos
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