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

Related Subjects

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