Biphase (FeO + Fe2O3)
ï Sputtering @3_A, 1kV/2kV
- Annealing in O2
@1._10-6, _ 580oC
OR
- Annealing in Vacuum
@ _ 580oC
ï Periodicity of Superstructure
: ~ 4nm
100 _ 100 nm2
ï Coexisting two phases
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