Abstract

Submicrometer-thick ${\mathrm{C}}_{76}$ films were prepared by vacuum deposition on air-cleaved mica and NaCl substrates held at 430 K, and the crystal structure and textures of the films were studied by transmission electron microscopy (TEM). ${\mathrm{C}}_{76}$ formed the fcc lattice with a lattice parameter a=1.53\ifmmode\pm\else\textpm\fi{}0.02 nm on both substrates. A film grown on mica exhibited a single-crystalline pattern in electron diffraction, though local variations in thickness and orientation were suggested by high-resolution TEM. On NaCl, polycrystalline films consisting of small grains (10--20 nm) were formed. Electron diffraction experiments at low temperatures showed no structural transformation down to 110 K.

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