We have studied magnetic flux distribution and magnetic relaxation in polycrystalline (Bi,Pb)2Sr2Ca2Cu3Olo+x superconductors at 77 K using a movable miniature Hall sensor. Flux distribution was studied by measuring magnetic field profiles as a function of external field and time. The effects of int
Magnetic field dependence of critical current density of BiPbSrCaCuO polycrystalline superconductor
✍ Scribed by V. Plecháček; F. Gömöry
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 351 KB
- Volume
- 73
- Category
- Article
- ISSN
- 0038-1098
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The influence of a multistep intermediate pressing and sintering process on properties, mainly on transport critical current density (Jc) and trapped magnetic field has been examined in a 2223-phase (BiogPbo.1)2Sr2Ca2 Cu3Om polycrystalline superconductor shaped in pellets and a tube. Prepared pellet
The critical current density at 77 K at 0 T and the tensile strength at room temperature of high Tc Bi(Pb)-Sr-Ca-Cu-O and Y-Ba-Cu-O oxides in silver-sheathed tapes prepared by the powder-in-tube method were investigated. The main results can be summarized as follows. (1) The critical current density