Abstract
In view of the common features of high Tc superconducting materials, such as very short coherence length and layered perovskite structure, sophiscated ceramics thin film technology is expected to be a powerful tool for fabricating Josephson tunnel junction devices as well as for constructing artificially designed new ceramics layers which may exhibit still higher Tc superconductivity. Studies on the epitaxial growth of ceramics films relating to high Tc superconductors are reported with a focus placed on our recent research using a pulsed laser deposition in ultra-high vacuum system (laser MBE).