J. C. Phillips, Physics of High-Tc Superconductors, 1989. Academic Press. pp. 261-264.* |
Jin et al., High Tc Superconductors—Composite Wire and Coil Fabrication, Jul. 1987, pp. 1-10. Appl. Phys. Lett. vol. 51 No. 29.* |
Namata et al., Y—Ba—Cu—O Oxide Superconductors, Jun. 27, 1988, pp. 2261-2262, Appl. Phys. Lett. 52(26).* |
“High Oxygen Pressure (PO2≦3000bar, T ≦1200•C) Investigations in the Y2Ba4Cu6+nO14+n Family,” Karpinski et al., Proceedings of HIP-3 Conference, Osaka, Japan (Jun., 1991). |
“Calcium-substituted Y—Ba—Cu—O Superconductors with Enhanced Tc Synthesized at Elevated Oxygen Pressures” Morris et al. Phys. Rev. B. 41(7):4118-4122 (Mar., 1990). |
“Phase Diagram and New Phases in the Y—Ba—Cu—O System at High Oxygen Pressure”, Chandrachood et al., Physica C, 171:187-193 (1990). |
“The High Tc Superconducting Phases of the Y2Ba4Cu6+nO14+n Family”, Karpinski et al., Journal of the Less-Common Metals, 164 & 165:3-19 (1990). |
“Stability of 124, 123, and 247 Superconductors,” Morris et al, Physica C, 159:287-294 (1989). |
“Jc-B Characteristics of Silver Sheathed Oxide Superconductors” Shibutani et al. IEEE Trans. Mag. 27:897-900 (1991). |
“The Hardness and Young's Modulus of Bulk YBa2Cu3O7−x (1:2:3) and YBa2Cu4O8(1:2:4) as Determined by Ultra Low Load Indentation”, Lucas et al., J. Mater. Res. 6(12):2519-2522 (Dec. 1991). |
“Characterization of YBa2Cu4O8 High Temperature Electrical Properties and Thermodynamic Stability”, Hong et al., J. Mater. Res. 6(10):2054-2058 (Oct. 1991). |
“Defects, Defect Ordering, Structural Coherence and Superconductivity in the 123 Copper Oxides”, Jorgensen et al., Proceedings of the Third International Conference on Materials and Mechanism of Superconductivity High-Temperature Superconductors, Kanazawa, Japan (Jul. 22-26, 1991). |
“Characterization and Superconductivity of YBa2Cu4O8 and Y2Ba4Cu7O14+x and Their Intergrowths”, Graf et al., Physica C 165&166:1671-1672 (1990). |
“Experimental and Theoretical Characterization of the YBa2Cu3O7/YBa2Cu4O8 Phase Transformation”, Fendorf et al., Journal of the Less-Common Metals 164&165:84-91 (1990). |
“Crystal Growth of YBa2Cu4O8 and Y2Ba4Cu7O15 Under High Oxygen Pressure”, Miyatake et al., J. Mater. Res. 7(1):1-6 (Jan. 1992). |
“Preparation of YBa2Cu4O8 by a Seeding Method at Ambient Pressure”, Iwai et al., Physica C 181:261-264 (1991). |
“Phase Stability and Decomposition if Superconductive YBa2Cu4O8”, Wada et al., Appl. Phys. Lett. 57(1):81-83 (Jul. 2, 1990). |
“Preparation and Properties of Superconducting Y(Ba1−xSrx)2Cu4O8”, Wada et al., Phys. Rev. B. 41(16):11209-11213 (Jun. 1, 1990). |
“Tunneling Measurements on YBa2Cu4O8 Under Magnetic Fields”, Nakao et al., Proceedings of ISS'90, Sendai, Japan (Nov. 1990); Advances in Superconductivity III, Springer-Verlag, Tokyo, 1991. |
“Preparation and Superconducting Properties of YBa2Cu4O8”, Miyatake et al., Physica C 160:541-544 (1989). |
“Microstructure of Yb2Ba4Cu7Ox/Ag Composites Produced by Oxidizing Metallic Precursors” Kogure et al. Physica C 157:351-357 (1989). |
“Superconducting Yb2Ba4Cu7Ox Produced by Oxidizing Metallic Precursors” Kogure et al. Physica C 156:45-56 (1988). |
“Pressure Dependence of Tc and Hc2 of YBa2Cu4O8,” Scholtz et al. Properties of Some High-Tc Superconductors at High Pressure and High Magnetic Fields, 89-109 Switzerland (1991). |
“R2Ba4Cu7O15−δ: A 92-K Bulk Superconductor,” Phys. Rev. B, 41:10, 7220-7223 (Apr. 1, 1990). |
“Calcium-Substituted Superconducting RBa2Cu4O8 with Tc˜90K Prepared at One Atmosphere”, Buckley et al., Physica C, 165:391-396 (1990). |
“Critical Current Densities and Microstructure of YBa2Cu4O8” Miyatake et al. Proceedings of ISS '90, Sendai, Japan, Nov., 1990; Advances in Superconductivity III: Springer-Verlag, Tokyo, Japan (1991). |
“On the Preparation of Y1Ba2Cu4O8” Horn et al. Solid State Comm. 79)6):483-486 (1991). |
“Preparation and Grain Boundary Chemistry of Dense Polycrystalline YBa2Cu4O8” Williams et al. J. Jap. Phys. 69(4):2426-2430 (Feb. 15, 1991). |
“Superconducting Properties and Formation of Yb2Ba4Cu7O14−x” Otto et al. Physica C 160:352-360 (1989). |
“Formation of YbnBa2nCu3n+1lOx (n=3,4) by Oxidation of Yb—Ba—Cu—Ag Metallic Precursors” Kogure et al. Physica C 157:159-163 (1989). |
Excerpt from Superconductor Week regarding “CryoPower Associates”, p. 7, Dec. 16, 1991. |
“Synthesis of YBa2Cu3O7−y and YBa2Cu4O8 by Aerosol Decomposition” Chadda et al. J. Aerosol Sci. 22(5):601-616 (1991). |
Ca- and La-substitution in YBa2Cu3O7−δ, Y2Ba4Cu7O15−δ and YBa2Cu4O8, Buckley et al., Physica C, 174:383-393 (1991). |
“Transport Critical Current of Aligned Polycrystalline Y1Ba2Cu3O7−δ and Evidence for a Nonweak-Linked Component of Intergranular Current Conduction” Ekin et al., J. Appl. Phys. 68(5):2285-2295 (Sep. 1, 1990). |
“Enhanced Critical Current Density in Ca-doped Y1Ba2Cu4O8”, Narwankar et al., Appl. Phys. Lett. 58(6), 1-3 (Feb. 11, 1991). |
“Preparation and Properties of Y-124 Superconductor Made by a Chemical Precipitation Method”, Laquer et al., IEEE Trans. Mag. 27:1-5 (1991). |
“Phase Stability and Decomposition of Superconductive (Y1−xCax)Ba2Cu4O8 (0≦x≦0.1)”, Wada et al., Jap. J. Appl. Physics 29(6), L915-L918 (Jun. 1990). |
“Microstructures in (Y0.95Ca0.05)Ba2Cu4O8 Prepared by Low and High Oxygen Partial Pressure Techniques”, Yamaguchi et al., Physica C 169:289-293 (1990). |
“Microstructure and AC-Susceptibility of (Y,Ca)Ba2Cu4O8 Superconductors Prepared at Low (3 atm) and High (400 atm) Oxygen Pressure”, Suzuki et al., Proceedings of ISS '90, Sendai, Japan (Nov. 1990); Advances in Superconductivity III, Springer Verlag, Japan (1991). |
“Synthesis and Superconducting Properties of Y(Ba1−yLay)2Cu4O8 and (Y1−xCax)(Ba1−yLay)2Cu4O8”, Sakurai et al., Phys. Rev. B. 42(13):8030-8034 (Nov. 1, 1990). |
“Microstructures in (Y1−xCax)Ba2Cu4O8 Prepared at Low and High Oxygen Partial Pressure”, Yamaguchi et al., Proceedings of ISS '90, Sendai, Japan (Nov. 1990). |
“Pressure Dependence of Superconducting Transition Temperature in Ca-doped YBa2Cu4O8”, Miyatake et al., Physica C 167:297-300 (1990). |
“Superconductive (Y1−xCax)Ba2Cu4O8 (x=0.0 and 0.05) Ceramics Prepared by Low and High Oxygen Partial Pressure Techniques”, Wada et al., J. Mater. Res. 6(1):1-10 (Jan. 1991). |
“Synthesis of Y1−xCaxBa2Cu4O8 by O2-HIP Heat Treatment”, Hayashi et al., ICMC'90, Topical Conference (1990). |
“Anisotropic Thermal Expansion of the 1:2:4 Yttrium Barium Copper Oxide Superconductor”, Doverspike et al., Physica C 172:486-490 (1991). |
“Oxidation Induced Decomposition of YBa2Cu3O7−x”, Williams et al., J. Appl. Phys. 70(2):906-913 (Jul. 15, 1991). |
“Phase Equilibria and Stability of Superconductors in the Y—Ba—Cu—O System”, Degeterov et al., Physica C 178:213-220 (1991). |
Kim et al., “Alignment of High Tc Superconductor Y1Ba2Cu3Oz Thick Film in Magnetic Field” IEEE Trans. On Appl. Supercond., 3(1) (Mar. 1993). |
Herd et al., “Grain-Aligned YBCO Superconducting Current Leads for Conduction-Cooled Applications” IEEE Trans. On Appl. Supercond., 3(1) (Mar. 1993). |