Abstract
The microstructure and phase constitution of bulk textured YBCO samples prepared by the modified MTG method in the longitudinal temperature gradient have been investigated. We found the existence of an unusual phase between stacked platelets. Microanalysis shows that this phase may be characterized as Y-143. This phase forms ellipsoid-like particles with a typical size about 0.05–2μ which can play the role of effective pinning centers. The reason for the phase formation is discussed. We assume that this phase exists commonly in melt-textured samples prepared in the temperature field gradient.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
S. Jinet al., Phys. Rev. B 37, 7850 (1988).
K. B. Alexanderet al., Phys. Rev. B 45, 5622 (1992).
S. Jin, Proc. 2nd ISS'89 ISTES, Tsucuba, Japan (1989), p. 957.
D. Mulleret al., Fifth Intern. Conf. ICMAS-93, Supercond. Materials, Paris (1993).
M. Murakamiet al., Supercond. Sci. Technol. 4, 43 (1991).
M. Murakami,Supercond. Sci. Technol. 5, 185 (1992).
K. Salamaet al., Appl. Phys. Lett. 54, 2352 (1989).
S. Jinet al., Appl. Phys. Lett. 54, 584 (1989).
L. M. Fisheret al., Phys. Rev. B 46, 10986 (1992).
R. J. Cava,Science 247, 656 (1990).
G. Krabbeset al., Physica C 235-240, 299 (1994).
Wonbaek Kimet al., Jpn. J. Appl. Phys. 31, L1668 (1992).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Aleshina, N.N., Fisher, L.M., Lisitskii, V.N. et al. New aspects in the microstructure of YBCO melt-textured high-T c superconductors. J Supercond 9, 535–538 (1996). https://doi.org/10.1007/BF00723527
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00723527