Epitaxy of Monoclinic VO₂ on Large-Misfit 3m Template Enabled by a Metastable Interfacial Layer.

ABSTRACT: We report the epitaxial growth of a monoclinic VO₂ thin film on the CoFe₂O₄(111) template, assisted by an interfacial layer of the metastable orthorhombic phase. The interface between orthorhombic VO₂ and CoFe₂O₄ is atomically sharp without noticeable interfacial diffusion. The (010)-faceted orthorhombic VO₂ layer is lattice-matched to both the CoFe₂O₄(111) template and the monoclinic phase, although they have different surface symmetries. The occurrence of an orthorhombic VO₂ thin layer significantly lowers the in-plane misfit strains of the monoclinic VO₂ epilayer, along both the [100] and [001] axes. Our first-principles calculations confirm that the low-misfit orthor

SUBMITTER: Zhang Z 

PROVIDER: S-EPMC11256101 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature