Back to results
US 5,019,553 AGranted
Sr.sub.2 (Bi.sub.1-a Pba).sub.x Cu.sub.y O.sub.z metal oxide material
AssigneeCanon Kabushiki Kaisha
InventorsJun Akimitsu, Tohru Den
Life of this patent
Estimating the term…
Abstract
A metal oxide material is provided which is represented by the composition formula: A.sub.2 B.sub.x Cu.sub.y O.sub.z wherein 2.ltoreq.x.ltoreq.3.5, 2.ltoreq.y.ltoreq.3.5, x+y>4, and 4<z; A is an element or a group of elements selected from alkaline earth metal elements; and B is an element or a group of elements selected from the group of elements consisting of bismuth, lead and thallium. The material has a superconductivity transition temperature of from 4.2K to 12K.
Claims2
A superconductive metal oxide material represented by the compositional formula:
- Sr.sub.z (Bi.sub.1-a Ph.sub.a).sub.x Cu.sub.y O.sub.z
- wherein 0.166.ltoreq.a<0.4
- 2.ltoreq.X.ltoreq.3.5
- 2.ltoreq.Y.ltoreq.3.5
- X+y.gtoreq.5
- 4<Z.
- in said compositional formula.
4 more elements
Dependencies are inferred from the claim text.