▎ 摘　　要

NOVELTY - Sapphire is obtained from aluminum oxide and graphene. USE - Used as sapphire obtained from aluminum oxide and graphene. ADVANTAGE - The graphene doped sapphire material has better high temperature strength, wider dielectric constant adjusting range, less dielectric loss and good microwave window. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for generating graphene doped sapphire comprising (1) mixing the aluminum oxide powder and graphene powder uniformly to obtain mixed material A, (2) mixing graphene powder and potassium fluoride powder uniformly to obtain mixed material B, (3) adding the mixed material A dry pressing and sintering into cake material, (4) adding the cake material into the crystal growth device, placing each cake material on a layer of mixture B, (5) heating chemical material into solution under vacuum state, insulating, reducing the power, stirring to impurity layer disappears, (6) seeding, (7) growing crystal and (8) annealing, naturally cooling, opening the furnace and taking crystal.