Effect of postannealing process on Bi2Sr2.1Ca 0.9Cu2O8+δ textured superconductors

Sotelo, A. (Universidad de Zaragoza) ; Madre, M.A. (Universidad de Zaragoza) ; Rasekh, S. ; Constantinescu, G. ; Torres, M.A. (Universidad de Zaragoza) ; Diez, J.C. (Universidad de Zaragoza)

Resumen: Bi-2212 samples prepared by the classical solid-state method have been grown from the melt using the Laser Floating Zone (LFZ) method. They have shown good grain alignment and transport critical current densities (J c ). After postannealing processes designed to produce the Bi-2212 phase controlled decomposition, J c values have been increased in an important manner. Maximum values have been achieved when samples were thermally treated at 680 °C for 168 h with improvements around 80 %, compared with the original textured samples. The results clearly indicate that postannealing processes, when adequately controlled, produce the formation of effective pinning centers which are responsible for the increase in the measured J c values.

Idioma: Inglés

Año: 2013

Publicado en: Journal of Superconductivity and Novel Magnetism 26, 4 (2013), 985-990
ISSN: 1557-1939

Factor impacto JCR: 0.93 (2013)

Categ. JCR: PHYSICS, CONDENSED MATTER rank: 53 / 67 = 0.791 (2013) - Q4 - T3
Categ. JCR: PHYSICS, APPLIED rank: 102 / 135 = 0.756 (2013) - Q4 - T3

Financiación: info:eu-repo/grantAgreement/ES/DGA/T12
Financiación: info:eu-repo/grantAgreement/ES/DGA/T87
Financiación: info:eu-repo/grantAgreement/ES/MICINN/MAT2008-00429
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2011-22719
Financiación: info:eu-repo/grantAgreement/ES/UZ/UZ2011-TEC-03

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Expresión Gráfica en Ing. (Dpto. Ingeniería Diseño Fabri.)
Área (Departamento): Área Cienc.Mater. Ingen.Metal. (Dpto. Ciencia Tecnol.Mater.Fl.)