Origin of Ferromagnetism in Ru and N Codoped TiO₂ Nanotubes: Experiments and Theory Investigations

Figure 6

(a) TDOS of Ru doped TiO₂ nanotubes films: (a)(I) the TDOS of Ru doped TiO₂, (a)(II) the PDOS of the Ru 4d electrons and five O 2p electrons (a)(III), (a)(IV), (a)(V), (a)(VI), and (a)(VII) nearest to the defect Ru atom. (b) The total density of states (DOS) of Ru-N codoped TiO₂ nanotube films: (b)(I) the TDOS of Ru-N codoped TiO₂, (b)(II) the PDOS of the Ru 4d electrons (b)(III), the PDOS of the N 2p electrons and four O 2p electrons (b)(IV), (b)(V), (b)(VI), and (b)(VII) nearest to the defect Ru atom.

(a)

(b)