DIAMOND SUBSTRATE

摘要

PROBLEM TO BE SOLVED: To provide a diamond substrate suitable for forming diamond film by a thick film vapor phase synthesis by controlling the surface shape of the diamond substrate by a machine polishing. SOLUTION: The diamond substrate is one that has a plurality of protruded parts formed on its surface wherein the protruded parts are formed on the principal surface of the diamond substrate. In the diamond substrate, it is preferred that the area in plan view of the pattern appeared on the top surface of the protruded parts occupies 10% or more against the area of the principal surface of the diamond substrate. COPYRIGHT: (C)2008,JPO&INPIT