Abstract
Subsolidus phase relations in the system (Bi-Sr-Ca-Cu)-O at 800°C were investigated via powder X-ray diffraction and electron probe microanalysis of solid-state reaction products. Two recently reported (Bi-Sr-Ca)-O phases were detected in quaternary assemblages and had the approximate cation stoichiometries of 9115 and 825. The only truly quaternary compound detected is the superconducting phase with the cation stoichiometry 2212. Tie lines, tie triangles, and compatibility tetrahedra involving this phase and the 2201 superconducting phase were determined. Both superconducting compounds exhibit small but detectable Sr-to-Ca solubility and are Sr-deficient with respect to the 'ideal' formulas.
| Original language | English |
|---|---|
| Pages (from-to) | 1965-1972 |
| Number of pages | 8 |
| Journal | Journal of the American Ceramic Society |
| Volume | 73 |
| Issue number | 7 |
| Publication status | Published - Jul 1990 |
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ASJC Scopus subject areas
- Engineering(all)
- Ceramics and Composites
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Phase composition and compatibilities in the Bi-Sr-Ca-Cu quaternary oxide system at 800°C in air. / Hong, Byungsun; Hahn, Joon; Mason, Thomas O.
In: Journal of the American Ceramic Society, Vol. 73, No. 7, 07.1990, p. 1965-1972.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Phase composition and compatibilities in the Bi-Sr-Ca-Cu quaternary oxide system at 800°C in air
AU - Hong, Byungsun
AU - Hahn, Joon
AU - Mason, Thomas O
PY - 1990/7
Y1 - 1990/7
N2 - Subsolidus phase relations in the system (Bi-Sr-Ca-Cu)-O at 800°C were investigated via powder X-ray diffraction and electron probe microanalysis of solid-state reaction products. Two recently reported (Bi-Sr-Ca)-O phases were detected in quaternary assemblages and had the approximate cation stoichiometries of 9115 and 825. The only truly quaternary compound detected is the superconducting phase with the cation stoichiometry 2212. Tie lines, tie triangles, and compatibility tetrahedra involving this phase and the 2201 superconducting phase were determined. Both superconducting compounds exhibit small but detectable Sr-to-Ca solubility and are Sr-deficient with respect to the 'ideal' formulas.
AB - Subsolidus phase relations in the system (Bi-Sr-Ca-Cu)-O at 800°C were investigated via powder X-ray diffraction and electron probe microanalysis of solid-state reaction products. Two recently reported (Bi-Sr-Ca)-O phases were detected in quaternary assemblages and had the approximate cation stoichiometries of 9115 and 825. The only truly quaternary compound detected is the superconducting phase with the cation stoichiometry 2212. Tie lines, tie triangles, and compatibility tetrahedra involving this phase and the 2201 superconducting phase were determined. Both superconducting compounds exhibit small but detectable Sr-to-Ca solubility and are Sr-deficient with respect to the 'ideal' formulas.
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UR - http://www.scopus.com/inward/citedby.url?scp=0025460453&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0025460453
VL - 73
SP - 1965
EP - 1972
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
SN - 0002-7820
IS - 7
ER -