▎ 摘　　要

NOVELTY - A transition-metal single-crystal thin film (12) is formed on a monocrystal substrate at the epitaxial. The transition-metal single-crystal thin film is heated, and carbon is supplied on the surface of the transition metal to obtain graphene (10). The monocrystal substrate is mica (100) substrate (13) or yttria-stabilized zirconia (111) substrate. USE - Manufacture of graphene used for gas sensor and spin-injection device. ADVANTAGE - The method provides uniform thin-film graphene having high quality, without domain boundary. DESCRIPTION OF DRAWING(S) - The drawing shows the laminated structure of a graphene/copper (111) thin film/mica substrate. Graphene (10) Transition-metal single-crystal thin film (12) Mica substrate (13)