An investigation of the transformation from Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8} to Bi{sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10}

Journal Article · Sat Aug 01 04:00:00 EDT 1998 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1006/jssc.1997.7717· OSTI ID:653125

Faqir, H; Chiba, H; Kikuchi, M; Syono, Y ^[1]; Monnereau, O; Vacquier, G ^[2]

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1. Tohoku Univ., Katahira, Sendai (Japan). Inst. for Materials Research
2. Univ. de Provence, Marseille (France)

The phase stabilization of the (Bi{sub 1.6+y}Pb{sub 0.4})Sr{sub 2{minus}x}Ca{sub 2+x}Ca{sub 2+x}Cu{sub 3}O{sub z} system has been studied in the composition ranges 0 {le} x {le} 0.25 and 0 {le} y {le} 0.4 by X-ray powder diffraction, magnetic susceptibility, and electrical resistivity measurements. The transformation from Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8} to Bi{sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10} is a slow process and the Bi{sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10} phase can be stabilized by a small excess of Bi and partial substitution of Sr by Ca. A final, nearly pure Bi{sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10} phase (T{sub c} = 107 K, {Delta}T{sub c} = 6--8 K) was obtained after 200 h annealing. Both X-ray analysis and magnetic susceptibility measurements appear to be excellent methods for monitoring such superconducting phases.

• Sponsoring Organization: Japanese Society for the Promotion of Science (Japan)
• OSTI ID: 653125
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 1 Vol. 139; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH OXIDES
CALCIUM OXIDES
CHEMICAL COMPOSITION
COPPER OXIDES
CRYSTAL-PHASE TRANSFORMATIONS
ELECTRIC CONDUCTIVITY
EXPERIMENTAL DATA
MAGNETIC SUSCEPTIBILITY
STRONTIUM OXIDES
SUPERCONDUCTIVITY
X-RAY DIFFRACTION