Phase equilibria in the systems SrO-CuO and Sro-1/2Bi sub 2 O sub 3

Journal Article · Wed Aug 01 04:00:00 EDT 1990 · Journal of the American Ceramic Society; (USA)

DOI:https://doi.org/10.1111/j.1151-2916.1990.tb07628.x· OSTI ID:6021947

Hwang, N M; Roth, R S; Rawn, C J ^[1]

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1. National Inst. of Standards and Technology (IMSE), Gaithersburg, MD (USA). Ceramics Div.

This paper reports the phase equilibria of the systems SrO-CuO and SrO-1/2Bi{sub 2}O{sub 3} studied by X-ray diffraction analysis of quenched powder samples. The compounds SrCuO{sub 2} and Sr{sub 2}CuO{sub 3} melt incongruently at 1085{degrees} and 1225{degrees}C, respectively. The newly found compound Sr{sub 6}Bi{sub 2}O{sub 9} decomposes at 965{degrees}C into SrO and Sr{sub 3}Bi{sub 2}O{sub 6}; Sr{sub 3}Bi{sub 2}O{sub 6} melts incongruently into SrO and liquid at 1210{degrees}C. SrBi{sub 2}O{sub 4} undergoes a phase transition at {approx}825{degrees}C, and although both are nonstoichiometric, the low-temperature phase is slightly poorer in SrO with 33.5 mol% SrO than the high-temperature phase.

• OSTI ID: 6021947
• Journal Information: Journal of the American Ceramic Society; (USA), Journal Name: Journal of the American Ceramic Society; (USA) Vol. 73:8; ISSN JACTA; ISSN 0002-7820
• Country of Publication: United States
• Language: English

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75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
BISMUTH OXIDES
CHALCOGENIDES
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LOW TEMPERATURE
OXIDES
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PHASE STUDIES
POWDERS
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STRONTIUM COMPOUNDS
STRONTIUM OXIDES
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X-RAY DIFFRACTION