Claims
- 1. A material which exhibits high temperature superconductivity at above 101 K., of formula
- Tl.sub.0.5 Pb.sub.0.5 CaSr.sub.2-z La.sub.z Cu.sub.2 O.sub.7
- wherein 0.15.ltoreq.z.ltoreq.0.3.
- 2. A material according to claim 1 and of formula
- Tl.sub.0.5 Pb.sub.0.5 CaSr.sub.1.8 La.sub.0.2 Cu.sub.2 O.sub.7.
Priority Claims (3)
Number |
Date |
Country |
Kind |
232633 |
Feb 1990 |
NZX |
|
233482 |
Apr 1990 |
NZX |
|
234014 |
Jun 1990 |
NZX |
|
Parent Case Info
This application is a continuation of U.S. Ser. No. 08/284,741, filed Aug. 2, 1994, now abandoned which is a continuation of U.S. Ser. No. 07/974,684, filed Nov. 12, 1992, now abandoned which is continuation of U.S. Ser. No. 07/659,102, filed Feb. 21, 1991, now abandoned.
US Referenced Citations (4)
Foreign Referenced Citations (2)
Number |
Date |
Country |
0368210 |
May 1990 |
EPX |
0116619 |
May 1990 |
JPX |
Non-Patent Literature Citations (7)
Entry |
Inoue "Superconductivity in a TI-Sr-Y-Cu-O System". Jap. Jnl. Appl Physics v. 28(8) Aug. 1989 pp. L1375-L1377. |
Mochiku "A new family of copper oxide compounds with a TI-O . . . " Jap. Jnl. Appl. Physics v. 29(4) Apr. 1990 pp.L588-L590. |
Liu "The fabrication and characterization of superconducting . . . " Physica L v. 159 1989. |
Zhang "Effect of doping on properties . . . " Wuli Xuaxue 6(3) 1990 pp. 259-262. |
Nagashina "Improving Superconductivity Characteristics . . . " Jap. Jnl. Appl. Phys. v. 28(6) Jun. 1987 pp. L930-933. |
Liu "Resistive magnetic, and structural studies of . . . " Appl. Phys. Lett v. 55(19) Nov. 6, 1984 pp. 2029-2031. |
Wu "Letter to Editor" New Technology Week Mar. 27, 1989 p. 3. |
Continuations (3)
|
Number |
Date |
Country |
Parent |
284741 |
Aug 1994 |
|
Parent |
974684 |
Nov 1992 |
|
Parent |
659102 |
Feb 1991 |
|