
doi: 10.1111/jmi.12174
pmid: 25182595
SummaryOptical quality GaSe crystals have been grown by vertical Bridgman method. The structural properties and micromorphology of a cleaved GaSe(001) surface have been evaluated by RHEED, SEM and AFM. The cleaved GaSe(001) is atomically flat with as low roughness as ∼0.06 nm excepting local hillock type defects. The hillock‐type formations are round‐shaped with a bottom diameter of ∼200 nm and a height of ∼20–35 nm. The drastic depletion of the hillock material by gallium has been indicated by EDX measurements.
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