Oxide superconducting material and process for preparing the same
AssigneeSumitomo Electric Industries, Ltd.
InventorsYasuko Torii, Hiroyuki Kusuhara
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Abstract
Superconducting oxide material containing compound represented by the formula: (Tl.sub.(l-p-q) Bi.sub.p Pb.sub.q).sub.y .gamma..sub.z (.alpha..sub.(l-r) .beta..sub.r).sub.s Cu.sub.v O.sub.w in which each of ".alpha." and ".gamma." is an element selected in IIa group of the periodic table, ".beta." is an element selected from a group comprising Na, K, Rb and Cs, "y", "z", "v", "w", "p", "q", "r" and "s" are numbers each satisfying respective range of 0.5.ltoreq.y.ltoreq.3.0, 0.5.ltoreq.z.ltoreq.6.0, 1.0.ltoreq.v, 5.0.ltoreq.w, 0.ltoreq.p.ltoreq.1.0, 0.ltoreq.q.ltoreq.1.0, 0.ltoreq.r.ltoreq.1.0 and 0.5.ltoreq.s.ltoreq.3.0.
Claims4
Superconducting compound oxide represented by the general formula (II):
- (Tl.sub.l-p Bi.sub.p).sub.l Sr.sub.2 Ca.sub.2 Cu.sub.3 O.sub.w(II)
- in which "p" is a number satisfying a range of 0<p<0.8 and "w" is a number with 5.ltoreq.w.ltoreq.15.
Superconducting compound oxide represented by the general formula (III):
- (Tl.sub.l-q Pb.sub.q).sub.l Ca.sub.3 Ba.sub.2 Cu.sub.4 O.sub.w(III)
- in which "q" is a number satisfying a range of 0<q.ltoreq.0.5 and "w" is a number satisfying a range of w.gtoreq.5.
Superconducting compound oxide represented by the general formula (III):
- (Tl.sub.l-q Pb.sub.q).sub.l Ca.sub.4 Ba.sub.2 Cu.sub.5 O.sub.w(III)
- in which "q" is a number satisfying a range of 0<q.ltoreq.0.5 and "w" is a number satisfying a range of w.gtoreq.5.
Dependencies are inferred from the claim text.