Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1989-02-09
1991-11-19
Lieberman, Paul
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
252518, 252521, 423604, 423674, 423675, 501123, 502346, 505783, C01F 1102, C01G 302, C01G 1500, H01L 3912
Patent
active
050666355
ABSTRACT:
A new high temperature superconducting system with transition temperature above 120 K is disclosed. One superconductor in that system in a preferred embodiment comprises TlRBaCuO wherein R is chosen from Group 2A elements excluding Ba. In a preferred embodiment, the superconductor is TlCaBaCuO. In another preferred embodiment, the superconductor comprises TlSrCuO. Processes for making high temperature superconducting system are also disclosed.
REFERENCES:
Liu "Indentification of Superconducting Phases in a new CaCu.sub.. . " J. Phys. C: Solid State Phys. 21 1988 pp. L1039-1043.
Sulpice "Bulk Superconductivity in Tl.sub.2 Ba.sub.2 CuCu.sub.2 O.sub.8 and . . . " Physica C156 Sep. 1988, pp. 243-248.
Shih "Multilayer Deposition of Tl--Ba--Ca--Cu--O Films" Appl. Phys. Lett. 53(6) Aug. 8, 1988 pp. 523-525.
Hervieu "A New Member of the Thallium Superconductive . . . " Jnl. of Solid State Chem, vol. 75, Jul. 1988, pp. 212-215.
Sequeira "Evidence for K--substitution in the Tl--Sites . . . " Physica C 156 Nov. 1, 1988, pp. 599-603.
Ginley "Sequential Electron Beam Evaporated Films . . . " Appl. Phys. Lett. vol. 53(5) Aug. 1, 1988, pp. 406-408.
Politis "Superconductivity in Tl--Ca--Ba--Cu--O Compounds" Mod. Phys. Lett. B vol. 2 (6) Jul. 1988, pp. 793-798.
Kirschner "Preparation Dependent Superconductivity . . . " Z. Phys. B--Couden Batter 73 Dec. 1988, pp. 293-297.
Liang "Structural characterization of a TlCaBaCu . . . " Appl. Phys. Lett. vol. 53(15) Oct. 10, 1988, pp. 1434-1436.
Hibble "The Relationship Between Chemical Comp . . . " Physica C 156 Nov. 1, 1988, pp. 604-606.
Gopalakrishnan "Synthesis and Properties of TlCaBaCu--O" Appl. Phy. Lett. 53 Accu. (S) Aug. 1, 1988, pp. 414-416.
Sugise "Preparation of Tl.sub.2 Ba.sub.2 Cu.sub.2 O.sub.y Thick Films . . . " Jap. Jnl. Appl. Phys. vol. 27(12) Dec. 1988, pp. L2314-2316.
Sugise "The Reversible Reactions in Tl--Ba--Ca--Cu--O Syst." Jap. Jnl. Appl. Phys., vol. 27(12) Dec. 1988, pp. L2310-2313.
Liang "Crystal Structures and Superconductivity . . . " Physica C 156 Nov. 1, 1988 pp. 616-624.
Ganguli "Superconductivity in the Tl--Ca--Ba--Cu--O System: . . . " Modern. Phy. Lett. B vol. 2 (10) Nov. 1988, pp. 1169-1176.
Wheatley "Interlayer Effects in High--Tc Superconductors" Nature vol. 333 May 12, 1988.
Beyers "Crystallography and Microstructure of Tl--Ca--Ba--Cu--O . . . " Appl. Phys. Lett. 53(5) Aug. 1, 1988, pp. 432-434.
Tordardi "Crystal Structure of Tl.sub.2 Ba.sub.2 Ca.sub.2 Cu.sub.3 O.sub.10, a 125K . . . " Science, vol. 240 Apr. 29, 1988, pp. 631-633.
Parkin "Tl.sub.1 Ca.sub.n--1 Ba.sub.2 Cu.sub.n O.sub.2n+3 (n=1,2,3): A new Class . . . " Phys/ Rev. Lett. vol. 61, No. 6 Aug. 8, 1988, pp. 750-753.
Richert "Atomic Substitution in YBa.sub.2 Cu.sub.3 O.sub.7 : Modification . . . " Amer. Vac. Soc. Series 3, Nov. 6, 1987, pp. 277-283.
Saito "High--Tc Superconducting Properties in (Y.sub.1--x Tl.sub.x) Ba.sub.2 Cu.sub.3 O.sub.(7--y) . . . " Physica 148B 1987, pp. 336-338.
Hazen "100K Superconducting Phases in the Tl--Ca--Ba--Cu--O Syst. . . . " Phys. Rev. Lett. vol. 60, No. 16, Apr. 18, 1988, pp. 1657-1668.
Ihara "A New High--Tc TlBa.sub.2 Ca.sub.3 Cu.sub.4 O.sub.11 Superconductor . . . " Nature vol. 334, Aug. 11, 1988, pp. 510-511.
Hasegawa, T., High T.sub.c Superconductivity of (La.sub.1--x Sr.sub.x).sub.2 CuO.sub.4 --Effect of Substitution of Foreign Ions for Cu and La on Superconductivity, Japan Journal Applied Physics, vol. 26, No. 4, Apr. 20, 1987, L337-L338.
Kishio, K., Effect of Lanthanide Ion Substitutions for Lanthanum Sites on Superconductivity of (La.sub.1--x Sr.sub.x).sub.2 CuO.sub.4--.delta., Japan Journal of Applied Physics, vol. 26, No. 4, Apr. 20, 1987, L391-L393.
Ohshima, S., Superconducting and Structural Properties of the New Ba.sub.1--x Ln.sub.x CuO.sub.3--y Compound System (ln=La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, and Yb), Japan Journal of Applied Physics, vol. 26, No. 5.
Tsurumi, S., High Tc Superconductivities of A.sub.2 Ba.sub.4 Cu.sub.6 O.sub.14, Japan Journal Applied Physics, vol. 26, No. 5, May 20, 1987, L856-:857.
Superconductivity News, vol. 1, No. 2, Aug. 1987, pp. 1, 2, and 6-8.
Yang, K. N., High Temperature Superconductivity in Rare Earth (R)--Barium Copper Oxides (RBa.sub.2)Cu.sub.3 O.sub.9--.delta., Solid State Communications, vol. 63, No. 6, pp. 515-519 (1987).
Tarascon, J. M., Oxygen and Rare--Earth Doping of the 90--K Superconducting Perovskite YBa.sub.2 Cu.sub.3 O.sub.7--x, The American Physical Society, vol. 36, No. 1, 1987, 226-234.
Hor, P. H., Superconductivity Above 90K in the Square--Planar Compound System ABa.sub.2 Cu.sub.3 O.sub.6+x with A=Y, La, Nd, Sm, Eu, Gd, Ho, Er, and Lu, The American Physical Society, vol. 58, No. 18, 1987, 1891-1894.
Khurana, A., Superconductivity Seen Above the Boiling Point of Nitrogen, Physics Today, Apr. 1987, 17-23.
Cava, R. J., Bulk Superconductivity of 91K in Single--Phase Oxygen--Deficient Perovskite Ba.sub.2 YCu.sub.3 O.sub.9--.delta., The American Physical Society, vol. 58, No. 16, 1987, 1676-1679.
Ferreira, J. M., Long--range Magnetic Ordering in the High--Tc Superconductors RBa.sub.2 Cu.sub.3 O.sub.7--.delta. (R=Nd, Sm, Gd, Dy, and Er), The American Physical Society, vol. 37, No. 4, Feb. 1, 1988, 2368-2371.
Kondoh, S. et al., Superconductivity in Tl--Ba--Cu--O System, Solid State Communications, vol. 65, No. 11, 1988, 1329-1331.
Richert, B. et al., Atomic Substitution in YBa.sub.2 Cu.sub.3 O.sub.7 ; Modification of the Electronic Structure, American Institute of Physics, Conference Proeedings, No. 165 (Thin Film Processing and Characterization of High--Temperature Superconductors), Nov. 6, 1987, 277-283.
Saito, High T.sub.c Superconducting Properties in (Y.sub.1--x Tl.sub.x)Ba.sub.2 Cu.sub.3 O.sub.7--y, Y(Ba.sub.1--x K.sub.x).sub.2 Cu.sub.3 O.sub.7--x and YBa.sub.2 (Cu.sub.1--x Mg.sub.y).sub.3 O.sub.7--x.
Hermann Allen M.
Sheng Zhengzhi
Boyd John
Ivester Hermann
Lieberman Paul
The University of Arkansas
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