Effect of Na substitution on superconducting properties of Bi-2212 ceramics prepared by Sinter-Forged process

Nane, O. ; Özçelik, B. ; Sotelo, A. (Universidad de Zaragoza) ; Madre, M. A. (Universidad de Zaragoza)

Resumen: Bulk textured Bi2Sr2Ca1-xNaxCu2Oy (x = 0.0, 0.05, 0.075 0.1, 0.15, and 0.20) ceramics have been prepared by a polymer solution method followed by sinter-forging process. The microstructure and superconducting properties of textured samples were affected by Na substitution. According to XRD data, all samples show that Bi-2212 phase is the major one, and main peaks corresponded to the (00l) diffractions confirming that the crystallographic c-axis is perpendicular to the surface. SEM micrographs showed that samples are composed of well-stacked and oriented grains. The best critical temperature, TC, was measured as 85.6 K for x = 0.075. The critical current density Jc, values decrease gradually with the increase of applied magnetic field. The maximum calculated Jc was 1.38 × 105 A/cm2 at 10 K for 0.075 Na sample which is about four times higher than the 0.34 × 105 A/cm2 value determined for the pure sample. The anisotropic properties of these textured materials have been investigated using magnetic measurements.

Idioma: Inglés

DOI: 10.1016/j.jeurceramsoc.2016.09.035

Año: 2017

Publicado en: Journal of the European Ceramic Society 37, 3 (2017), 1007-1012
ISSN: 0955-2219

Factor impacto JCR: 3.794 (2017)

Categ. JCR: MATERIALS SCIENCE, CERAMICS rank: 1 / 27 = 0.037 (2017) - Q1 - T1

Factor impacto SCIMAGO: 1.068 - Materials Chemistry (Q1) - Ceramics and Composites (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/T12
Financiación: info:eu-repo/grantAgreement/ES/MINECO/ENE2014-52105-R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2013-46505-C3-1-R

Tipo y forma: Artículo (PostPrint)

Área (Departamento): Área Cienc.Mater. Ingen.Metal. (Dpto. Ciencia Tecnol.Mater.Fl.)