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- ItemEpitaxial growth of the first two members of the Ban +1InnO2.5 n +1Ruddlesden-Popper homologous series(New York, NY : American Institute of Physics, 2022) Hensling, Felix V. E.; Smeaton, Michelle A.; Show, Veronica; Azizie, Kathy; Barone, Matthew R.; Kourkoutis, Lena F.; Schlom, Darrell G.We demonstrate the epitaxial growth of the first two members, and the n = ∞ member of the homologous Ruddlesden-Popper series of Ba n + 1 In n O 2.5 n + 1 of which the n = 1 member was previously unknown. The films were grown by suboxide molecular-beam epitaxy where the indium is provided by a molecular beam of indium-suboxide [In 2O (g)]. To facilitate ex situ characterization of the highly hygroscopic barium indate films, a capping layer of amorphous SiO 2 was deposited prior to air exposure. The structural quality of the films was assessed by x-ray diffraction, reflective high-energy electron diffraction, and scanning transmission electron microscopy.