Superconductor technology: apparatus – material – process – High temperature – per se – Thallium containing
Patent
1990-02-15
1997-01-28
Lieberman, Paul
Superconductor technology: apparatus, material, process
High temperature , per se
Thallium containing
505783, 252518, 252521, H01B 1200, H01L 3912
Patent
active
055977812
ABSTRACT:
A high temperature superconductor system is provided having the following formula: M-A-B-C-D-E, wherein, M is a metallic element. A is an element in Group 3A, B is an element in Group 2A, C is another element in Group 2A, D is an element in Group 1B, and E is an element in Group 6A. In an embodiment, the high temperature superconductor has the following formula: R-Tl-Sr-Ca-Cu-O (wherein R is chosen form the group consisting of La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and Y). Processes for making these high temperature superconductors are also disclosed.
REFERENCES:
patent: 4755493 (1988-07-01), Takeuchi et al.
patent: 4870052 (1989-09-01), Engler et al.
patent: 4880773 (1989-11-01), Itozuki
Kishio "High-Tc Superconducting Oxide Solid Solutions . . . " Chemistry Letters. 1987 pp. 635-638.
Kaneko "On the coprecipitation method for the prep . . . " Jap. Jul. Appl. Physics v. 26 (5) May 1987 pp. L734-735.
Oda "Oxygen Deficiency in YM.sub.2 CU.sub.3 O.sub.7+y (M=Ba,Sr) Family" Jap. Jnl. Appl. Phys. v. 26(5) May 1987 pp. L804-L806.
Wada "Annealing Effect of High-Tc Superconducting . . . " Jap. Jnl. Appl. Phys. v. 26(9) Sep. 1987 pp. L1475-L1477.
Nagashima "Superconductivity in Tl.sub.1.5 SrCaCu.sub.2 O.sub.x " Jap. Jnl. Appl. Phys. v. 27(6) Jun. 1988 pp. L1077-L1079.
Haldar "A new intermediate-Ti oxide superconductor . . . " Materials Letters. v. 7(1,2) Aug. 1988 pp. 1-4.
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-.delta., 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 Cu).sub.3-x 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 Leters, 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.
Saito, Y., 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.
Ihara, H. et al., Possibility of Superconductivity of 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, 227-283.
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.
Qui, 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, 1988, 2539-2542.
Sheng, Z. Z., et al., Superconductivity in the Rare-Earth-Free Tl-Ba-Cu-O System Above Liquid-Nitrogen Temperature, Nature, vol. 332, Mar. 3., 1988, 55-58.
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.c >120 K, Nature, vol. 334 11 Aug. 1988, 510-511.
Hazen, R. M., et al., 100-K Superconducting Phases in the Tl-Ca-Ba-Cu-O System, Physical Review Letters, vol. 60, No. 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.
Hatta, S., et al., Pt-coated Substrate Effect on Oxide Superconductive Films in Low-Temperature Processing, Appl. Phys. Lett. 53 (2), 11 Jul. 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), 25 Jul. 1988, 329-331.
Iwazumi, T., et al., Identification of a Structure with Two Superconducting Phases in L-Ba-Cu-0 System (L=La or Y), Japanese Journal of Applied Physics, vol. 26, No. 5, May, 1987, L621-L623.
Capone, II., D. W., et al., Super Critical Fields and High Superconducting Transition Temperatures of La.sub.1.85 Sr.sub.0.15 CuO.sub.4 and La.sub.1.85 Ba.sub.0.15 Cu.sub.4, Appl. Phys. Lett 50 (9), 2 Mar., 1987, 543-544.
Johnson, D. W., et al., Fabrication of Ceramic Articles from High T.sub.c Superconducting Oxides, Materials Research Society, Symposium S Proceedings (High Temperature Superconductors), Apr. 1987, 193-195.
Garwin, L., Superconducting Conference Yields New Temperature Record, Nature vol. 332 10 Mar. 1988.
Suzuki, A., et al., Rare- Earth(RE)--Barium Solubility Behavior in Y(Ba.sub.z -.sub.x RE.sub.x)Cu.sub.3 O.sub.7=.delta. and Sm(Ba.sub.z-x RE.sub.x)Cu.sub.3 O.sub.7=.delta., Japanese Journal of Applied Physics, vol. 27, No. 5, May, 1988, L792-L794.
Peters, P. N., et al., Observation of Enhanced Properties in Samples of Silver Oxide Doped YBa.sub.2 Cu.sub.3 O.sub.x, Applied Phys. Lett 52 (24), 13 Jun. 1988, 2066-2067.
S. Natarajan et al., Superconductivity Studies on (Y.sub.1-x Ln.sub.x)Ba.sub.2 Cu.sub.3 O.sub.7, Ln=La,Pr,Tb, Physica C, vol. 153-155, Feb. 1988, 926-927.
D. D. Sarma, et al., Electronic Structure of High-T.sub.c Superconductors from Soft-x-ray Absorption, Physical Review B, vol. 37, No. 16, Jun. 1988, 9784-9787.
K. Kishio, et al., Superconduct
Hermann Allen M.
Sheng Zhengzhi
Kopec M.
Lieberman Paul
University of Arkansas
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