Materials and device aspects of some high Tc superconducting films

Work at NRL on high Tc thin superconducting films will be reviewed. We will show how changing the preparation conditions controls the morphology and superconducting properties of these films, thus films can be tailored for a particular device application. Emphasis will be placed on the properties of Bl structure NbNxC1−x films. Devices that these films are particularly suited for are Josephson detectors, phonon bolometers and x‐ray monochromators. The particular properties of our films that make them suitable for these diverse applications will be presented.