A
graphite material with a high degree of preferred crystallographic orientation of the
c-axes perpendicular to the surface of the substrate, obtained by
graphitization heat treatment of
pyrolytic carbon
or by chemical vapour deposition at temperatures above
.
Note:
'
Pyrographite', a synonym for pyrolytic
graphite, was introduced as a trademark and should not be used as a term. Hot working of pyrolytic
graphite (by heat treatment under compressive stress at temperatures above
) results in
highly oriented pyrolytic graphite (
HOPG).
Source:
PAC, 1995, 67, 473
(Recommended terminology for the description of carbon as a solid (IUPAC Recommendations 1995))
on page 502
