Process for making T1-Ba-Ca-Cu-O superconductors

Details Process for making T1-Ba-Ca-Cu-O superconductors Process for making T1-Ba-Ca-Cu-O superconductors

1988-08-25

1992-01-21

Lieberman, Paul

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

252521, 423604, 423624, 423635, 501123, 505725, 505783, C01F 1102, C01G 302, C01G 1500

Patent

active

050828258

ABSTRACT:
A process of making high-temperature Tl-based superconductors. The process includes the steps of reacting solid Ba-Ca-Cu-oxides with Tl.sub.2 O.sub.3 vapor. The process allows high quality Tl-based superconductors to be easily fabricated.

REFERENCES:
patent: 4870052 (1989-09-01), Engler
Shih "Multilayer Deposition of Thallium Barium Calcium Copper-Oxide" Appl. Phys. Lett. vol. 53 (6) pp. 523-525 (Abstract-Aug. 1988).
Ginley "Sequential Electron Beam Evaporated Films of Tl.sub.2 CaBa.sub.2 Cu.sub.2 O.sub.y " Appl. Phys. Lett. 53 (5) Aug. 1, 1988 pp. 406-408.
Qiu "Formation of Tl-Ca-Ba-Cu-O Films by Diffusion . . ." Appl. Phys. Lett. 53(12) Sep. 19, 1988 pp. 1122-1124.
Gopalakrishnan "Synthesis and Properties of a 125 K Super-Conductor" Appl. Phys. Lett. vol. 53(5) Aug. 1, 1988 pp. 414-416.
Parkin "Bulk Superconductivity at 125 K in Tl.sub.2 Ca.sub.2 Ba.sub.2 Cu.sub.3 O.sub.x " Phys. Rev. Lett. vol. 60 No. 24 Jun. 13, 1988 pp. 2539-2542.
Y. Saito et al., 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-y and YBa.sub.2 (Cu.sub.1-x Mg.sub.x).sub.3 O.sub.7-y, Physica 148B (1987) 336-338.
S. Kondoh et al., Superconductivity in Tl-Ba-Cu-O System, Solid State Communications, vol. 65, No. 11, pp. 1329-1331, 1988.
M. Sera et al., On the Structure of High-T.sub.c Oxide System Tl-Ba-Cu-O.
Hasegawa, T., High Tc 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 of Applied Physics, 26, No. 4, Apr. 20, 1987, L337-338.
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, 26, No. 4, Apr. 20, 1987, L391-393.
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 Applied Physics, 26, No. 5, May 20, 1987, L815-L817.
Tsurumi, S., High Tc Superconductivities of A.sub.2 Ba.sub.4 Cu.sub.6 O.sub.14, Japan Journal Applied Physics, 26, No. 5, L856-857.
Superconductivity News, vol. 1, No. 2, Aug. 1987, pp. 1, 2, and 6-8.
K. N. Yang, High Temperature Superconductivity in Rare Earth (R)-Barium Copper Oxides (RBa.sub.2)Cu.sub.3 O.sub.9-.delta., Solid State Comm., vol. 63, No. 6, pp. 515-519 (1987).
J. M. Ferrira, Long-Range Magnetic Ordering in the High-T.sub.c Superconductors RBa.sub.2 Cu.sub.3 O.sub.7-.delta. (R=Nd, Sm, Gd, Dy, and Er), The American Physical Society 1988, vol. 37, No. 4.
J. M. Tarascon, 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, 1987, vol. 36, No. 1.
P. H. Hor, Superconductivity Above 90 K 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, 1987, vol. 58, No. 18.
A. Khurana, Superconductivity Seen Above the Boiling Point of Nitrogen, Physics Today, Apr. 1987.
R. J. Cava, Bulk Superconductivity of 91 K in Single Phase Oxygen-Deficient Perovskite Ba.sub.2 YCu.sub.3 O.sub.9-.delta., The American Physical Society, 1987, vol. 58 No. 16.

Affiliated with

Also associated with

Rating

Process for making T1-Ba-Ca-Cu-O superconductors does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for making T1-Ba-Ca-Cu-O superconductors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for making T1-Ba-Ca-Cu-O superconductors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-115592