P1−xTa8+xN13 (x=0.1–0.15): A Phosphorus Tantalum Nitride Featuring Mixed‐Valent Tantalum and P/Ta Disorder Visualized by Scanning Transmission Electron Microscopy. - Pointner, Monika M.; Ceniza, Claude; Nusser, Lukas; Witthaut, Kristian; Wolf, Florian; Weidemann, Martin; Eisenburger, Lucien; Moewes, Alexander; Oeckler, Oliver; Schnick, Wolfgang (Angewandte Chemie, 2024)