Figure 4

(a) Raman, and (b) FTIR spectra for the samples annealed at different temperatures. In the inset Eu and A2u vibrational modes of delafossite structure are depicted.

(a) Raman, and (b) FTIR spectra for the samples annealed at different temperatures. In the inset Eu and A2u vibrational modes of delafossite structure are depicted.