Abstract
Advances toward major technological applications of the bulk, high Tc superconductors have been hindered by two major barriers, i.e., the Josephson weak-links at grain boundaries and the lack of sufficient intragrain flux pinning. It has been demonstrated that the weak link problem can be overcome by extreme alignment of grains such as in Melt-Textured-Growth (MTG) materials. Modified or improved processing by various laboratories has produced further increased critical currents. However, the insufficient flux pinning seems to limit the critical current density in high fields to about 104 – 105A/cm2 at 77K, which is not satisfactory for many applications. In this paper, processing, microstructure, critical current and flux-pinning behavior of the MTG type superconductors will be described.
This is a preview of subscription content, log in via an institution to check access.
Preview
Unable to display preview. Download preview PDF.
Similar content being viewed by others
References
Ekin J. W., (1987) Transport Critical Current in Bulk Sintered YBa2Cu3Ox and Possibilities for Its Enhancement. Adv. Ceram. Mat. 2: 586–592.
Chaudhari P., Koch R. H., Laibowitz R. B., McGuire T. R., Gambino R. J., (1987) Critical Current Measurement in Epitaxial Films of YBa2Cu3O7-x Compound. Phy. Rev. Lett. 58: 2684–2686.
Dimos D., Chaudhari P., Mannhart J., LeGoues F. K., (1988) Orientation Dependence of Grain Boundary Critical Currents in YBa2Cu3O7-δ Bicrystals. Phys. Rev. Lett. 61: 219–222.
Jin S., Tiefel T. H., Sherwood R. C., Davis M. E., van Dover R. B., Kammlott G. W., Fastnacht R. A., Keith H. D., (1988) High Critical Currents in Y-Ba-Cu-O Superconductors. Appl. Phys. Lett. 52: 2074–2076.
Salama K., Selvamanickam V., Gao L., Sun K., (1989) High Current Density in Bulk YBa2Cu3Ox Superconductor. Appl. Phys. Lett. 54: 2352–2354.
Murakami M., Morita M., Doi K., Miyamoto K., (1989) A New Process With the Promise of High Jc in Oxide Superconductors. Jap. J. Appl. Phys. 28: 1189–1194.
Jin S., Sherwood R. C., Gyorgy E. M., Tiefel T. H., van Dover R. B., Nakahara S., Schneemeyer L. F., Fastnacht R. A., Davis M. E., (1988) Large Magnetic Hysteresis in a Melt-Textured Y-Ba-Cu-O Superconductor. Appl. Phys. Lett. 54: 584–586.
Nakahara S., Jin S., Sherwood R. C., Tiefel T. H., (1988) Analysis of Dislocations in Y-Ba-Cu-O Superconductor. Appl. Phys. Lett. 54: 1926–1928.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1990 Springer Japan
About this paper
Cite this paper
Jin, S. (1990). Melt Textured Growth. In: Ishiguro, T., Kajimura, K. (eds) Advances in Superconductivity II. Springer, Tokyo. https://doi.org/10.1007/978-4-431-68117-5_55
Download citation
DOI: https://doi.org/10.1007/978-4-431-68117-5_55
Publisher Name: Springer, Tokyo
Print ISBN: 978-4-431-68119-9
Online ISBN: 978-4-431-68117-5
eBook Packages: Springer Book Archive