superconductors

Electrical effective parameters of the grains and the Montgomery’s method in ceramics

6 de maio de 2019 LAbI UFSCar 0

Electrical effective parameters of the grains and the Montgomery’s method in ceramics Abstract: In this paper we have applied the Montgomery’s measurement method to ceramic samples, to study the behavior of the grains’ electrical effective parameters, […]

Hidden features in (Bi,Pb)-2223 granular superconductors

20 de outubro de 2016 CDMF 0

Writers: Hernandez-Wolpez, M; Martinez-Guerra, E; Jardim, RF; Mune, P Keywords: high-temperature superconductors; high-tc superconductors; lower critical-field; pure 2223 powders; semi-wet methods; magnetic-field; flux-creep; bi2-xpbxsr2ca2cu3oy compositions; grain-boundaries; rapid synthesis Abstract: The aim of this review is to give a […]

Highly dense and textured superconducting (Bi,Pb)(2)Sr2Ca2Cu3O10+delta ceramic samples processed by spark-plasma texturing

15 de agosto de 2016 CDMF 0

Writers: L. Pérez-Acosta and E. Govea-Alcaide and J.G. Noudem and I.F. Machado and S.H. Masunaga and R.F. Jardim Keywords: Cuprates superconductors; Texture; Spark-plasma; Anisotropy Abstract: Consolidated powders of the superconducting cuprate Bi1.65Pb0.35Sr2Ca2Cu3O10+δ (Bi-2223) by the spark-plasma texturing (SPT), […]

The spatial distribution of temperature and oxygen deficiency in spark-plasma sintered superconducting Bi-based materials

16 de dezembro de 2014 Rose Portasio 0

Writers: E. Govea-Alcaidea, J.E. Pérez-Fernándeza, I.F. Machadob, R.F. Jardimc, Keywords: Bi-based superconductor; Granular material; Spark-plasma sintering; Finite element method; Transport properties Abstract: Pre-reacted powders of (Bi–Pb)2Sr2Ca2Cu3O10+δ (Bi-2223) were consolidated by using the spark plasma sintering (SPS) technique […]