Structure of the Amorphous Phase of Pyrolisates of Lanthanum Diphthalocyanine according to X-Ray Scattering Data

Data on X-ray diffraction in lanthanum diphthalocyanine pyrolysates synthesized at temperatures of 800-1800 degrees C. demonstrate the formation of an amorphous carbon phase with embedded lanthanum atoms. Low-temperature pyrolysis (800-900 degrees C.) creates layered carbon structures. Due to annealing at 1000 degrees C., carbon integrates into globules whose number of atoms is m similar to 100. Such structures with gyration radii of R-g similar to 0.4-0.5 nm on the order of the precursor molecule size are synthesized in the temperature range of 1000-1800 degrees C., and are stable in terms of size and mass. In this case, their density approaches that of graphite.