AlV$_2$O$_4$ thin films via in-situ interfacial topotaxy

Conventional oxide epitaxy approaches face challenges when the oxidation conditions of constituent elements differ significantly.

Conventional oxide epitaxy approaches face challenges when the oxidation conditions of constituent elements differ significantly. Here we demonstrate that V--O thin films can serve as solid-phase precursors for epitaxial AlV$_2$O$_4$, comprising a pyrochlore V$^{2.5+}$ network…