04990488 is referenced by 3 patents and cites 2 patents.

Black crystal compositions having the empirical composition Bi.sub.a Sr.sub.b Cu.sub.c O.sub.d are described where a+b+c=1, A=0.36-0.557, b=0.098-0.496, c=0.1-0.4 and d=approximately 1+a/2. These compositions have a superconducting transition temperature T.sub.c for superconductivity of greater than 20 K and contain a principal phase which crystallizes in the orthorhombic system. They can be prepared from the mixture of the oxides in the atomic ratio stated by heating to 700.degree.-1000.degree. C.

Title
Superconductors Bi-Sr-Cu-O
Application Number
7/275779
Publication Number
4990488
Application Date
November 23, 1988
Publication Date
February 5, 1991
Inventor
Joachim Adam
Butzbach
DE
Elfi Waldschmidt
Bad Camberg
DE
Leonhard Walz
Rastatt
DE
Martin Schwarz
Konigstein/Taunus
DE
Winfried Becker
Kelkheim
DE
Hans Georg von Schnering
Aidlingen
DE
Assignee
Hoechst Aktiengesellschaft
DE
IPC
C01G 29/00
C01G 3/02
C01F 11/02
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