Metal oxide material with Ln, Sr, Cu, Re, O, and optionally Ca
AssigneeCanon Kabushiki Kaisha
InventorsTohru Den, Tamaki Kobayashi
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Abstract
Provided is a metal oxide material represented by the composition formula of Ln.sub.a Sr.sub.b Cu.sub.3-x M.sub.x O.sub.c, where 2.7.ltoreq.a+b.ltoreq.3.3; 0.8.ltoreq.a.ltoreq.1.2; 6.ltoreq.c.ltoreq.9; and 0.05 .ltoreq.x.ltoreq.0.7, Ln is at least one element selected from the group of elements of Y and lanthanoids or an atomic group consisting of said elements, and M is at least one element selected from the group of elements of Ti, V, Ga, Ge, Mo, W and Re or an atomic group consisting of said elements.
Claims10
A metal oxide material represented by the formula of Ln.sub.a Sr.sub.b Cu.sub.3-x M.sub.x O.sub.c, where 2.7.ltoreq.a+b.ltoreq.3.3;
- 0.8.ltoreq.a.ltoreq.1.2;
- 6.ltoreq.c.ltoreq.9;
- and 0.05.ltoreq.x.ltoreq.0.7, Ln is at least one element selected from the group consisting of Y and lanthanoids, and M is Re.
A metal oxide material represented by the formula of Ln.sub.a Ca.sub.b Sr.sub.c Cu.sub.3-x M.sub.x O.sub.d, where 2.7.ltoreq.a+b+c.ltoreq.3.3;
- 0.8.ltoreq.a+b.ltoreq.2.1;
- 0.05.ltoreq.b.ltoreq.1.1;
- 6.ltoreq.d.ltoreq.9;
- and 0.05.ltoreq.x.ltoreq.1.0, Ln is at least one element selected from the group consisting of Y and lanthanoids, and M is Re.
Dependencies are inferred from the claim text.