▎ 摘　　要

NOVELTY - Synthesizing single-layer graphene on surface of single crystal iron involves placing single crystal iron, iron sample with clean surface in vacuum environment containing hydrocarbon gas. The pressure in the vacuum environment is not higher than 10-5 pascal. The iron sample extracts carbon element from the hydrocarbon gas, and single layer of graphene grows on surface of single crystal iron. USE - Method for synthesizing single-layer graphene on surface of single crystal iron for preparing spin device (claimed). ADVANTAGE - The method enables to synthesize single-layer graphene on surface of single crystal iron that maintains original performance and prevents reaction with oxygen in the air.