Physical and chemical effects of silver additions to Bi sub 2 Sr sub 2 CaCu sub 2 O sub 8 and (Bi,Pb) sub 2 Sr sub 2 Ca sub 2 Cu sub 3 O sub 10

Journal Article · Sun Apr 01 04:00:00 EDT 1990 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.41.7197· OSTI ID:7123145

Jones, T E; Schindler, J W; Boss, R D; Thibado, P M; McGinnis, W C ^[1]

---

1. Naval Ocean Systems Center, Code 633, San Diego, California 92152-5000 (USA)

Silver in the form of silver peroxide has been added prior to the sintering step in the preparation of Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8} and (Bi,Pb){sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10}. X-ray-diffraction analysis and microscopic examination show no evidence for chemical reaction between the silver and the ceramic superconductors. However, the presence of the silver can affect the phase purity of the final product---the amount of the three-layered high-{ital T}{sub {ital c}} (110-K) phase can either be increased or decreased depending on the sintering conditions and the starting composition. No evidence can be seen in the x-ray spectra to indicate that the silver is going into either phase. The only effect of the silver is on the thermodynamics and kinetics of the sintering process.

• OSTI ID: 7123145
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 41:10; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
FABRICATION
IMPURITIES
LEAD COMPOUNDS
LEAD OXIDES
OXIDES
OXYGEN COMPOUNDS
SAMPLE PREPARATION
SILVER ADDITIONS
SILVER ALLOYS
SINTERING
STOICHIOMETRY
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
THERMODYNAMICS
TRANSITION ELEMENT COMPOUNDS