One of the major barriers to the application of the bulk high-T_c oxide superconductors is the low value of critical current density J_c caused by the ’weak-link’between grains. To solve the problem, efforts have be...One of the major barriers to the application of the bulk high-T_c oxide superconductors is the low value of critical current density J_c caused by the ’weak-link’between grains. To solve the problem, efforts have been made in cleaning and decreasing the area of grain boundaries as well as in preparing textured materials.展开更多
基金Project supported by Chinese National Center for Research and Development of Superconductivity.
文摘One of the major barriers to the application of the bulk high-T_c oxide superconductors is the low value of critical current density J_c caused by the ’weak-link’between grains. To solve the problem, efforts have been made in cleaning and decreasing the area of grain boundaries as well as in preparing textured materials.