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. 2018 Jun 6;5(6):171811. doi: 10.1098/rsos.171811

Figure 5.

Figure 5.

Raman spectra for undoped TiO2, Ti0.99Hf0.01O2, Ti0.97Hf0.03O2 and Ti0.95Hf0.05O2 materials. The inset displays the D and G bands in the Raman spectrum for Ti0.95Hf0.05O2.