Large intergranular critical currents in joined YBCO monoliths

H. Walter; Ch. Jooss; F. Sandiumenge; B. Bringmann; M. P. Delamare; A. Leenders; H. C. Freyhardt

doi:10.1209/epl/i2001-00387-4

All issues

Volume 55 / No 1 (July 2001)

Europhys. Lett., 55 1 (2001) 100-104

Abstract

Issue		Europhys. Lett. Volume 55, Number 1, July 2001


Page(s)		100 - 104
Section		Condensed matter: electronic structure, electrical, magnetic, and optical properties
DOI		https://doi.org/10.1209/epl/i2001-00387-4
Published online		01 December 2003

Europhys. Lett., 55 (1), pp. 100-104 (2001)

Large intergranular critical currents in joined YBCO monoliths

H. Walter¹, Ch. Jooss², F. Sandiumenge³, B. Bringmann², M. P. Delamare², A. Leenders² and H. C. Freyhardt¹^,2

¹ Zentrum für Funktionswerkstoffe Göttingen gGmbH Windausweg 2, 37073 Göttingen, Germany
² Institut für Materialphysik, Universität Göttingen Hospitalstrasse 3-7, 37073 Göttingen, Germany
³ Institut de Ciència de Materials de Barcelona Campus de la Universitat Autònoma de Barcelona 08193 Bellaterra, Catalonia, Spain

Received: 8 September 2000
Accepted: 18 April 2001

Abstract

Large-volume HTS tiles with low-angle grain boundaries are obtained by cutting melt textured $\chem{YBa_2Cu_3O_{7-\mathit{x}}}$ (YBCO) samples parallel to their c-direction and rejoining them with $\chem{ErBa_2Cu_3O_\mathit{x}}$ , applying a pressure of 0.5 $\un{MPa}$ . This joining technique enables the preparation of large monoliths as well as of monoliths with complex shape which are required for technical application. Samples prepared by this technique exhibit high intergranular critical current densities up to 10⁹ $\un{A/m^2}$ at 55 $\un{K}$ and good mechanical connectivity.

PACS: 74.72.Bk – Y-based cuprates / 81.20.Vj – Joining; welding / 74.60.Jg – Critical currents

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