90 K Tl-Ba-Ce-Cu-O superconductor and processes for making same

Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

505783, 501123, 501152, 252518, 252521, C04B 4189, H01L 3912

Patent

active

052159620

ABSTRACT:
A high temperature superconductor system having the nominal composition: Tl-Ba-Ce-Cu-O. The high temperature superconductor of the present invention has a transition temperature of about 90 K. Processes for making the high temperature superconductor are also provided.

REFERENCES:
patent: 4755493 (1988-07-01), Takeuchi et al.
patent: 4870052 (1989-09-01), Engler et al.
patent: 4880773 (1989-11-01), Itozaki et al.
patent: 4994432 (1991-04-01), Hermann et al.
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-x . . . " Physica 148B, 1987, 336-338.
Wang et al., "The 90k bulk superconductivity in the Thallium-Barium-Cerium-Copper-Oxygen System", Physica C 158(3) pp. 507-510, 1989.
Zhang et al., "The copper valence state and structure of lithium, cerium, europien, vanadium-doped ytthium-barium-copper-oxide system", Mod. Phy. Lett. B, 3(12), 955-60, 1989 abstract.
Sheng et al., "Superconductivity in the rare-earth-free Tl-Ba-A-O System above liquid-nitrogen temperature", Nature, vol. 332(3) Mar. 3, 1988.
Wu et al., "Bulk Superconductivity with T.sub.c O up to 95K in a Tl-Pb-Ca-Ce-Sr-Cu-O with a YBa.sub.2 Cu.sub.3 Oy-like structure", Appl. Phys. Lett. 54(24) 2464-6 1989 (abstract).
Rao et al, "Superconductivity (1:1:2:2:)-type layered cuprates of the formula TlCa.sub.1-x T.sub.x Sr.sub.2 Cu.sub.2 Oy(T-Yr rare earth element) Physical Review vol. 40 #4, 2565-67 Aug. 1, 1989.
Inoue et al., "Superconductivity in a Tl-Sr-Y-Cu-O System" Jap. Jour Appl Phys. vol. 28 #8, 1375-77 Aug. 1989.
Gangichi et al., "Superconductivity in Bi-Ca-Y-Si-Ca-O ac Tl-Ca-Y-Ba-Ci-O" Mat'l Res. Bull., vol. 24, pp. 103-109, Jan. 1989.
Wang et al., "The 90K bulk superconductivity in the thallium-barium-cerium-copper-oxygen system", Physica C, 158(3), pp. 507-510, 1989-abstract & comp search.
Sheng et al, "Superconductivity in the R-Tl-Sr-Cu-O system with R-Rare Earth", Solid State Comm., vol. 71, #9, pp. 739-741, 1989.
Hasegawa, T., et al., High T. Superconductivity of (La.sub.1-x Sr.sub.x CuO.sub.4 -Effect of Substition . . . Superconductivity, Japan Journal of Applied Physics, vol. 26, No. 4, Apr. 20, 1987, L337-L338.
Kishio, K., et al., Effect of Lanthanide Ion Substitutions for Lanthanum Sites on Supercondicutivity of (LA.sub.1-x Sr.sub.x).sub.2 CuO.sub.4-o, Japanese Journal of Applied Physics, vol. 26, No. 4, Apr. 20, 1987, L391-L393.
Ohshima, S., et al., 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, . . . and Yb), Japanese Journal of Applied Physics, vol. 26, No. 5, May 1987, L815-L817.
Tsurumi, S., et al., High T. Superconductivities of A.sub.2 Ba.sub.4 Cu.sub.6 O.sub.14+y Japanese Journal of Applied Physics, vol. 26, No. 5, May 1987, L856-L857.
Superconductivity News, vol. 1, No. 2, Aug. 1987, pp. 1, 2, and 6-8.
Yang, K. N., et al., 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, 1987, pp. 515-519.
Tarascon, J. M., et al., Oxygen and Rare-Earth Doping of the 90-K Superconducting Perovskite YBa.sub.2 Cu.sub.3 O.sub.7-x, Physical Review B, vol. 36, No. 1, 1987, 226-234.
Hor, P. H., et al., 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, Physical Review Letters, 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., et al., Bulk Superconductivity at 91 K in Single-Phase Oxygen-Deficient Perovskite Ba.sub.2 YCu.sub.3 O .sub.9-.delta., Physical Review Letters, vol. 58, No. 16, 1987, 1676-1679.
Nagashima, T., et al., Superconductivity in Tl.sub.1.5 SrCaCu.sub.2 O.sub.x, Japanese Journal of Applied Physics, vol. 27, No. 6, Jun. 1988, L1077-L1079.
Saito, T., 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.
Kondoh, S., et al., Superconductivity in Tl-Ba-Cu-O System, Solid State Communications, vol. 65, No. 11, 1988, 1329-1331.
Sera, M. et al., On the Structure of High-T.sub.c Oxide System Tl-Ba-Cu-O, Institute for Molecular Science, Myodaiji, Okazaki 444 Japan, 1988, Feb.
Ihara, H. et al., Possibility of Superconductivity at 65.degree. C. in Sr-Ba-Y-Cu-O System, Japanese Journal of Applied Physics, vol. 26, No. 8, Aug. 1987, L1413-L1415.
Ishida, T., Compositional Variation of High T.sub.c in Yb.sub.x Er.sub.1-x Ba.sub.2 Cu.sub.3 O.sub.6+y System, Japanese Journal of Applied Physics, vol. 26, No. 8, Aug. 1987, L1294-L1295.
Kijima, T., et al., Superconductivity in the Bi-Sr-La-Cu-O System, Japanese Journal of Applied Physics, vol. 27, No. 6, Jun. 1988, L1035-L1037.
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 Proceedings No. 165 (Thin Film Processing and Characterization of High-Temperature Superconductors), Nov. 6, 1987, 277-283.
Ferreira, J. M., et al., Long-range Magnetic Ordering the High-T.sub.c Superconductors RBa.sub.2 Cu.sub.3 O.sub.7-.delta. (R=Nd, Sm, Gd, Dy and Er), Physical Review B, vol. 37, No. 4, Feb. 1, 1988, 2368-2371.
Shih, I., et al., Multilayer Deposition of Thallium Barium Calcium Copper Oxide Films, Applied Physics Letter 53(6), 1988, 523-525.
Ginley, D. S., et al., Sequential Electron Beam Evaporated Films of Tl.sub.2 CaBa.sub.2 Cu.sub.2 O.sub.y with Zero resistance at 97 K, Applied Physics Letters, 53 (5), Aug. 1, 1988, 406-408.
Qiu, C. X., et al., Formation of Tl-Ca-Ba-Cu-O Films by Diffusion of Tl into rf-sputtered Ca-Ba-Cu-O, Applied Physics Letters, 53 (12), Sep. 19, 1988, 1122-1124.
Gopalakrishnan, I. K., et al., Synthesis and Properties of a 125 K Superconductor in the Tl-Ca-Ba-Cu-O System, Applied Physics Letters, 53 (5), Aug. 1, 1988, 414-416.
Parkin, S. S. P., et al., Bulk Superconductivity at 125 K in Tl.sub.2 Ca.sub.2 Ba.sub.2 Cu.sub.3 O.sub.x, Physical Review, Jun. 1988, 2539-2542.
Sheng, Z. Z., et al., Superconductivity at 90 K in the Tl-Ba-Cu-O System, Physical Review Letters, vol. 60, No. 10, Mar. 7, 1988, 937-940.
Sheng, Z. Z., et al., Bulk Superconductivity at 120 K in the Tl-Ca/Ba-Cu-O System, Nature, vol. 332, Mar. 10, 1988, 138-139.
Ihara, H., et al., A New High-T.sub.c TlBa.sub.2 Ca.sub.3 Cu.sub.4 O.sub.11 Superconductor with T.sub.2 >120 K, Nature, vol. 334, Aug. 11, 1988, 510-511.
Sheng, Z. Z., et al., Tl.sub.2 O.sub.3 Vapor Process of Making TI-Ba-Ca-Cu-O Superconductors, Appl. Phys. Lett. 53 (26), 26 Dec. 1988, 2686-2688.
Hazen, R. M., et al., 100-K Superconducting Phases in the Tl-Ca-Ba-Cu-O System, Physical Review Letters, vol. 60, Mo. 16, 18 Apr. 1988, 1657-1660.
Sheng, Z. Z., et al., New 120 K Tl-Ca-Ba-Cu-O Superconductor, Appl. Phys. Lett., vol. 52, No. 20, 16 May 1988, 1738-1740.
Lin, R. J., et al., Forming Superconducting Tl-Ca-Ba-Cu-O Thin Films by the Diffusion Method, Japanese Journal of Applied Physics, vol. 28, No. 1, Jan. 1989, L85 L85-L87.
Thompson, B. J., et al., Preparation of High T.sub.c Tl-Ba-Ca-Cu-O Thin Films by Pulsed Laser Evaporation and Tl.sub.2 O.sub. 3 Vapor Processing, Appl. Phys. Lett. 54(18), May 1, 1989, 1810-1811.
Sugise, R., et al., Preparation Tl.sub.2 Ba.sub.2 Ca.sub.2 Cu.sub.3 O.sub.y Thick Films from Ba-Ca-Cu-O Films, Japanese Journal of Applied Physics, vol. 27, No. 12, Dec. 1988, L2314- L2316.
Hatta, S., et al., Pt-coated Substrate Effect on Oxide Superconductive Films in Low-Temprature Processing, Appl. Phys. Lett. 53 (2), Jul. 11, 1988, 148-150.
Lee, W. Y., et al., Superconducting Tl-Ca-Ba-Cu-O Thin Films With Zero Resistance at Temperatures of up to 120 K, Appl. Phys. Lett. 53 (4), Jul. 25, 1988, 329-331.
Oota, A., et al., Electircal, Magnetic and Superconducting Properties of High-T.sub.c Superconductor (Y, Sc)-(Ba, Sr)-Cu Oxide, Japanese Journal of Appl Physics, vol. 26, No. 8, Aug. 1987, L1356-1358.
Iwazumi, T

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

90 K Tl-Ba-Ce-Cu-O superconductor and processes for making same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with 90 K Tl-Ba-Ce-Cu-O superconductor and processes for making same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and 90 K Tl-Ba-Ce-Cu-O superconductor and processes for making same will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1814478

All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.