Abstract
Single crystal Naβ″-Al 2O 3 films have been prepared by a vapour reaction technique. The formation of Naβ″ -Al 2O 3 phase is initiated by introducing Li + into the furnace atmosphere. Laue back-reflection X-ray photographs and SEM observation show perfect Naβ″-Al 2O 3 single crystal film grows in the (001) direction under properly controlled conditions. SEM indicates the thickness of the film ≥40 μm. The formation mechanism of the single crystal Naβ″-Al 2O 3 film has been studied and the microstructure, conductivity and luminescence observed.
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