caa a22 4500 388019344 CHVBK 20180307124919.0 cr unu---uuuuu 161130e199810 xx s 000 0 eng 10.1557/JMR.1998.0384 doi S0884291400046197 pii (NATIONALLICENCE)cambridge-10.1557/JMR.1998.0384 Relation between internal boundaries and critical current in textured YBa2Cu3O7−δ: Transmission electron microscope observations [Elektronische Daten] The local critical current (Ic) at 77 K measured at the mm scale in a 60 mm long sample of YBa2Cu3O7−δ prepared by a melting zone process is correlated to the microstructure. Lower values of Ic (<20 A) were obtained in a part of the sample which optical microscope examination showed to be generally polycrystalline. In contrast, the rest of the sample, consisting mostly of large textured domains, gave values for Ic of 120 A and above. Transmission electron microscope observations revealed that the textured domains contain internal boundaries. Depending on the scale of observation, the misorientation angles across the boundaries could vary from a few tenths of a degree up to a few degrees. This seems characteristic for boundaries in textured material which allow strong coupling of the superconducting current across themselves. Copyright © Materials Research Society 1998 Khalfi A. Laboratoire de Matériaux Céramiques et Traitement de Surfaces, E.S.A. C.N.R.S. 6015, 123 avenue Albert Thomas, 87060 Limoges Cedex, France Trolliard G. Laboratoire de Matériaux Céramiques et Traitement de Surfaces, E.S.A. C.N.R.S. 6015, 123 avenue Albert Thomas, 87060 Limoges Cedex, France Soulestin B. Laboratoire de Matériaux Céramiques et Traitement de Surfaces, E.S.A. C.N.R.S. 6015, 123 avenue Albert Thomas, 87060 Limoges Cedex, France Smith D. S. Laboratoire de Matériaux Céramiques et Traitement de Surfaces, E.S.A. C.N.R.S. 6015, 123 avenue Albert Thomas, 87060 Limoges Cedex, France Bonnet J. P. Laboratoire de Matériaux Céramiques et Traitement de Surfaces, E.S.A. C.N.R.S. 6015, 123 avenue Albert Thomas, 87060 Limoges Cedex, France Bourgault D. Elaboration par Procédés Magnétiques, Matériaux et Force Magnétique (MATFORMAG), U.P.R. C.N.R.S. 9033, 25 avenue des Matyrs B.P. 166, 38042 Grenoble Cedex 9, France Tournier R. Elaboration par Procédés Magnétiques, Matériaux et Force Magnétique (MATFORMAG), U.P.R. C.N.R.S. 9033, 25 avenue des Matyrs B.P. 166, 38042 Grenoble Cedex 9, France Journal of Materials Research Cambridge University Press 13/10(1998-10), 2800-2806 0884-2914 13:10<2800 1998 13 JMR https://doi.org/10.1557/JMR.1998.0384 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1557/JMR.1998.0384 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Khalfi A. Laboratoire de Matériaux Céramiques et Traitement de Surfaces, E.S.A. C.N.R.S. 6015, 123 avenue Albert Thomas, 87060 Limoges Cedex, France NATIONALLICENCE 700 1- Trolliard G. Laboratoire de Matériaux Céramiques et Traitement de Surfaces, E.S.A. C.N.R.S. 6015, 123 avenue Albert Thomas, 87060 Limoges Cedex, France NATIONALLICENCE 700 1- Soulestin B. Laboratoire de Matériaux Céramiques et Traitement de Surfaces, E.S.A. C.N.R.S. 6015, 123 avenue Albert Thomas, 87060 Limoges Cedex, France NATIONALLICENCE 700 1- Smith D. S. Laboratoire de Matériaux Céramiques et Traitement de Surfaces, E.S.A. C.N.R.S. 6015, 123 avenue Albert Thomas, 87060 Limoges Cedex, France NATIONALLICENCE 700 1- Bonnet J. P. Laboratoire de Matériaux Céramiques et Traitement de Surfaces, E.S.A. C.N.R.S. 6015, 123 avenue Albert Thomas, 87060 Limoges Cedex, France NATIONALLICENCE 700 1- Bourgault D. Elaboration par Procédés Magnétiques, Matériaux et Force Magnétique (MATFORMAG), U.P.R. C.N.R.S. 9033, 25 avenue des Matyrs B.P. 166, 38042 Grenoble Cedex 9, France NATIONALLICENCE 700 1- Tournier R. Elaboration par Procédés Magnétiques, Matériaux et Force Magnétique (MATFORMAG), U.P.R. C.N.R.S. 9033, 25 avenue des Matyrs B.P. 166, 38042 Grenoble Cedex 9, France NATIONALLICENCE 773 0- Journal of Materials Research Cambridge University Press 13/10(1998-10), 2800-2806 0884-2914 13:10<2800 1998 13 JMR CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge