Previous work on the superconducting transport properties of individual grain boundaries in
thin-film bicrystals of YBa 2 Cu 3 O 7 has been extended to provide a more comprehensive …

A study has been made of the critical current in silver clad YBa 2 Cu 3 O 7 wires. Detailed
resistive transitions, in zero magnetic field and with a magnetic field applied, indicate that …

Within the framework of the ''brick-wall''model, we review in detail how various physical
mechanisms could act to limit the critical current in high-T c superconducting tapes. The …

We report on studies of magnetic and transport properties, as well as on characterization of
defects in the pure YBa 2 Cu 3 O 7− δ and the YBa 2 Cu 3 O 7− δ/Ag (10 and 30 wt.%) …

Intragrain critical current densities of polycrystalline bulk samples and single crystals were
investigated by inductive flux profile measurements. In addition to the well known granularity …

The composition variations associated with grain boundaries in bulk sintered YBa2Cu, 07 b
have been investigated by means of energy-dispersive x-ray microanalysis in a high spatial …

The dependence of the magnetic moment m obtained from the hysteresis loops on the
speed of the magnetic field sweep ̇ H= dH ext/dt is explained on the basis of Anderson's …

The microstructure within single domains of melt-processed YBa 2 Cu 3 O 7− x (1: 2: 3)
material has been examined. Rather than composing a ''brick-wall''structure, the stacked …

Regular networks of localized grain boundary dislocations (GBDs) have been imaged by
means of transmission electron microscopy in three different types of high-angle grain …

Magnetically aligned YBa2Cu3O7-δ ceramics show resistivities approaching that of single
crystals and improved transport critical currents in a magnetic field. Reduced microcracking …