Ba7Nb4MoO20: A Proton or Oxide Ion Conductor? - Sara Adeeba Ismail; Kazuaki Toyoura; Lulu Jiang; Amir Masoud Dayaghi; Hui Guo; Maxim Avdeev; Huaican Chen; Wen Yin; Wang Hay Kan; Truls Norby; Donglin Han (Journal of the American Chemical Society, 2025)