Electron Diffraction at Low Temperature II. Radial Distribution Analysis of Metastable Structure of Metal Films Prepa ed by Low Temperature Condensation

Electron diffraction patterns of films of bismuth and gallium prepared at 4.2°K show diffuse halos characteristic of an amorphous state (Fujime, 1966). If the state of atomic aggregate of these films is amorphous, they will be examples of amorphous superconductors. In order to decide whether the films of bismuth and gallium prepared by low temperature condensation are in an amorphous state or consist of very fine crystallites, the radial distribution analysis has been carried out for these films. The results of this analysis lead, after some consideration, to the conclusion that the state of atomic aggregate of these films is certainly amorphous.