BASE MATERIAL FOR GROWING SINGLE CRYSTAL DIAMOND, AND METHOD FOR MANUFACTURING SINGLE CRYSTAL DIAMOND SUBSTRATE

摘要

PROBLEM TO BE SOLVED: To provide a base material for growing a single crystal diamond and a method for manufacturing a single crystal diamond substrate attaining the growth of a single crystal diamond with a large area and good crystallinity and the low-cost manufacture of the single crystal diamond substrate of high quality.

SOLUTION: The base material 10 for growing the single crystal diamond includes at least a base material 13 made of material with a linear expansion coefficient smaller than that of MgO and not smaller than 0.5×10-6/K; a single crystal MgO layer 11 formed on the side, where the single crystal diamond is grown, of the base material 13 by a laminating method; and a film 12 made of any one of an iridium film, a rhodium film and a platinum film heteroepitaxially grown on the single crystal MgO layer 11.

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