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O , C , and Al spectra for graphite sample with predeposition anneal at to remove physisorbed interfacial hydroxyls (a) Al as-deposited and (b) Al oxidized in 1000 mbar at for 10 min. Sample without predeposition anneal (c) Al as-deposited and (d) oxidized under the same conditions as (b).
AFM image and feature heights showing comparison of (a) 1 nm and (b) 1 nm on natural graphite. Large (10 nm) clusters form after deposition of Al and oxidation at in dry , in contrast to which is substantially more uniform.
1 nm Hf deposited on (a) exfoliated graphite with deposition chamber walls at and , (b) annealed graphite with chamber walls cooled by liquid and , (c) Hf oxidized in 1000 mbar at , (d) deposited by reactive e-beam deposition with partial pressure of . A difference spectrum between the two C peaks is shown in (e); the peak for sample (c) is broader than (d) by 0.13 eV.
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