Fig. 5: Characterization of spontaneous superlattice formation. | NPG Asia Materials

Fig. 5: Characterization of spontaneous superlattice formation.

From: Self-assembly of correlated (Ti, V)O2 superlattices with tunable lamella periods by kinetically enhanced spinodal decomposition

Fig. 5

a Change in periods Λ with growth rate in self-assembled TixV1-xO2 (x = 0.4, 0.5, and 0.55) superlattices. The growth rate was calculated by dividing the total thickness by the growth time. Λ increased as the growth rate increased. b Arrhenius plot of Λ in Ti0.5V0.5O2 superlattices with different laser frequencies f. The activation energy decreased from 0.574 ± 0.011 eV at f = 3 Hz to 0.436 ± 0.078 eV at f = 7 Hz; the change is attributed to a considerable increase in mass transport during impingement by V and Ti ions generated by the excimer laser

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