The effect of Ag doping on superconducting properties of the Bi-Pb-Sr-Ca-Cu-O tape fabricated by an Ag sheath

Journal Article · Mon Jun 15 00:00:00 EDT 1992 · Journal of Applied Physics; (United States)

DOI:https://doi.org/10.1063/1.350453· OSTI ID:7202056

Oota, A; Horio, T ^[1]; Ohba, K; Iwasaki, K ^[2]

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1. Department of Electrical and Electronic Engineering, Toyohashi University of Technology, Tempaku-cho, Toyohashi, Aichi 441 (Japan)
2. Technical Research and Development Laboratory, TOPY Industries Ltd., Akemi-cho, Toyohashi, Aichi 441 (Japan)

The powder-in-tube method using an Ag sheath is applied to achieve high current capacity in the tapes of Bi-Pb-Sr-Ca-Cu-O (BPSCCO) with the high-{ital T}{sub {ital c}} phase ({ital T}{sub {ital c}}=110 K), by a combination process of cold working and sintering. Two kinds of the BPSCCO powder with and without Ag doping are used as the materials for tape fabrication. The morphology, structure, and critical current density {ital J}{sub {ital c}} are investigated on the tapes by x-ray diffraction, differential thermal analysis, scanning electron microscope, magnetic susceptibility, and {ital I}-{ital V} curves. The optimum sintering conditions to obtain a maximum in the value of {ital J}{sub {ital c}} at 77 K and 0 T are presented in the Ag-doped tapes and the nondoped ones. An improvement in the {ital J}{sub {ital c}} vs {ital B} properties up to 1 T at 77 K is presented in the BPSCCO tape by Ag doping. The Ag doping causes neither change in the value of {ital T}{sub {ital c}} (=110 K) nor decomposition of the high-{ital T}{sub {ital c}} phase.

• OSTI ID: 7202056
• Journal Information: Journal of Applied Physics; (United States), Vol. 71:12; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
SUPERCONDUCTING COMPOSITES
HIGH-TC SUPERCONDUCTORS
BISMUTH OXIDES
CALCIUM OXIDES
COPPER OXIDES
CRITICAL CURRENT
CRYSTAL STRUCTURE
DOPED MATERIALS
LEAD OXIDES
SILVER ADDITIONS
STRONTIUM OXIDES
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
BISMUTH COMPOUNDS
CALCIUM COMPOUNDS
CHALCOGENIDES
COMPOSITE MATERIALS
COPPER COMPOUNDS
CURRENTS
ELECTRIC CURRENTS
LEAD COMPOUNDS
MATERIALS
OXIDES
OXYGEN COMPOUNDS
SILVER ALLOYS
STRONTIUM COMPOUNDS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
360207* - Ceramics
Cermets
& Refractories- Superconducting Properties- (1992-)