Since the first days of high-T c superconductivity, the materials science and the physics of
grain boundaries in superconducting compounds have developed into fascinating fields of …

High critical current density in high temperature superconducting melt-processed Y-Ba-Cu-O
(YBCO), which consists of a superconducting (Y123) phase matrix containing discrete …

In the past few years magneto-optical flux imaging (MOI) has come to take an increasing role
in the investigation and understanding of critical current densities in high-T c …

A liquid phase processing method for the fabrication of bulk YBa2Cu3O x superconductors
with large current carrying capacity has been developed. Slow cooling through the peritectic …

Similar to free surfaces, the grain boundaries (GBs) in metals, semiconductors and
insulators can contain flat (faceted) and curved (rough) portions. In the majority of cases …

Contact surface resistivities (product of contact resistance and area) in the 10-! O n cm2
range have been obtained for both silver and gold contacts to high Tc superconductors. This …

A model for flux creep in high T c superconductors is developed. The model predicts that
associated with the flux creep regime is a resistance which shows a linear variation with …

The polycrystalline granular BSCCO high T c superconductors (HTSC) have limitations in
various applications. These limitations appear due to the flux pinning's weakness and the …

We calculate the transport critical-current density in a granular superconductor in magnetic
fields below about 5× 10− 3 T. The field dependence in this region is assumed to be …

The general behaviour of ac susceptibility and its dependence on temperature, ac field
amplitude and frequency and dc bias field in high T c superconductors is described. This …