The Raman spectra of very thin evaporated films (∼6 nm thick) of metallic titanium and oxidized titanium are obtained with a new technique called interference-enhanced Raman scattering. The results indicate that titanium films exhibit a crystalline hcp structure while the titanium oxide has an amorphous structure with local atomic bonding configurations similar to those in crystalline ${\mathrm{Ti}}_2$${\mathrm{O}}_3$.

• Received 25 September 1979

DOI:https://doi.org/10.1103/PhysRevLett.44.273