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US 4,894,361 AGranted
Superconducting metal oxide Tl-Pb-Ca-Sr-O compositions and processes for manufacture and use
AssigneeE. I. Du Pont de Nemours and Company
InventorMunirpallam A. Subramanian
Life of this patent
Estimating the term…
Abstract
Compositions having the nominal formula Tl.sub.e Pb.sub.a Ca.sub.b Sr.sub.c Cu.sub.d O.sub.x wherein a is from about 1/10 to 3/2, b is from about 1 to 4, c is from about 1 to 3 d is from about 1 to 5 e is from about 3/10 to 1 x=(a+b+c+d+e+y) where y is from about 1/2 to 3, are superconducting. Processes for manufacturing such compositions and for using them are disclosed.
Claims4
A superconducting composition having the nominal formula
- Tl.sub.e Pb.sub.a Ca.sub.b Sr.sub.c Cu.sub.d O.sub.x
- wherein
- a is from about 1/10 to 3/2,
- b is from about 1 to 4,
- c is from about 1 to 3
- d is from about 1 to 5
- e is from about 3/10 to 1
- x=(a+b+c+d+e+y)
- where
- y is from about 1/2 to 3,
- said composition having a superconducting transition temperature of at least 70 K.
8 more elements
Dependencies are inferred from the claim text.