Abstract
The influence of the addition of BaO2 on magnetic and transport properties of Bi2Sr2CaCu2OX superconductors was studied. Several compositions with varying BaO2 fractions were investigated. Both bulk samples and Ag-clad wires were fabricated for every composition. Differential thermal analysis and x-ray diffraction measurements showed a reaction between BaO2 and the precursor, while microstructural investigations revealed that the Ba remained homogeneously distributed in the Bi-2212. Magnetization measurements using SQUID and vibrating sample magnetometer showed improved flux pinning in the doped samples. Heat treatment process was varied to optimize the critical current densities. High current densities were achieved at high magnetic fields.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Michiya Okada, Kazuhide Tanaka, Naomi Inoue, Junichi Sato, Hitochi Kitaguchi, Hiroaki Kumakura, Tsukasa Kiyosi, Kioshi Inoue and Kazumasa Togano, “Transport Properties of Bi-2212/Ag Superconducting Magnet with I, over 500A”, Jpn. J. Appl. Phys. Vol. 34 (1995) pp. L981 - L983
W. Dai, K.R. Marken Jr., S. Hong, L. Cowey, K Timms and IMCDougall, “Fabrication of High T, Coils from Bi-2212 Powder in Tube and DIP Coated Tape”, Proceedings Applied Superconductivity Conference, Boston (1994)
H.W. Weijers, D. Hazelton, L. Cowey, Y.S. Hascicek, I. Mutlu. U.P.Trociewitz and S.W. van Sciver, “Bi-2212 Coils for IT Class Insert Coils”, Proceedings ICMC-conference, Portland (1997)
U. Balachandran, “Development of Ceramic Superconmductors for Electric Power Aplications”, Proceedings of International Workshop on High-Temperature Superconductivity, Jaipur (1996)
P. Haldar and L. Motwidlo, J. Metals 44 (10), 54–58 (1992)
D.C. Larbalestier, “Superconductor Flux Pinning and Grain Boundry Control”, Science 274, 1 (1996)
K.C. Goretta, V.R. Todt, D.J. Miller, M.T. Langan, Y.L. Chen and U. Balachandran, “Engineered Flux-Pinning Centers in Bi2Sr2CaCu2O, and TIBa2Ca2Cu3O, Superconductors”, Journal of Electronic Materials, Vol. 24, No. 12 (1995)
Peter Majewski, Steffen Elschner, Fritz Aldinger, “Enhanced Pinning by Second-Phase Precipitates in Sr Rich Bi2Sr2CaCu2O8 Ceramics”, Physica C 249 (1995) 234–240
J. Schwartz and S. Wu, “Enhanced Flux-Line Pinning in Bi2Sr2CaCu2O, by Neutron Irradiation and Li(n, 3T)a Reaction-Induced Charged Particle Defects”, Journal of Applied Physics 73 (3), 1343–1347 (1993)
J. Schwartz and S. Wu, “Properties of Li-doped, Polycristalline, Melt-Textured Bi-Sr-Ca-Cu-O Tapes Prepared by Powder-In-Tube Processing”, Physica C 185–189 2403–2404 (1991)
S. Wu, J. Schwartz, G.W. Raban Jr., “Superconducting Properties and Microstructural Evolution of Li doped Bi2Sr2CaCu2O,”, Physica C 246 (1995) 297–308
E.E. Hellstrom, “Processing Bi-Based High-T, Superconducting Tapes, Wires, and Thick Films for Conductor Applications”,in: “High-Temperature Superconducting Materials Science and Engineering”, Donglu Shi, ed., Pergamon (1995), p. 383 f.f.
E.E. Hellstrom and W. Zang, “Formation and Prevention of Bubbles when Melt Processing Ag-Sheathed Bi2Sr2CaCu2O, (2212) Conductors”, Supercond. Sci. Technol. 8 (1995) 327–323
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1998 Springer Science+Business Media New York
About this chapter
Cite this chapter
Trociewitz, U.P., Sastry, P.V.P.S.S., Boutemy, B.T., Sahm, P.R., Schwartz, J. (1998). Investigations on BaO2 Additions in Ag-Clad Bi2Sr2CaCu2Ox Conductors. In: Balachandran, U.B., Gubser, D.G., Hartwig, K.T., Reed, R.P., Warnes, W.H., Bardos, V.A. (eds) Advances in Cryogenic Engineering Materials . Advances in Cryogenic Engineering, vol 44. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-9056-6_87
Download citation
DOI: https://doi.org/10.1007/978-1-4757-9056-6_87
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4757-9058-0
Online ISBN: 978-1-4757-9056-6
eBook Packages: Springer Book Archive