Tunable Narrow‐Band Cyan‐Emission of Eu2+‐doped Nitridomagnesophosphates Ba3−xSrx[Mg2P10N20] : Eu2+ (x=0–3). - Pritzl, Reinhard M.; Pointner, Monika M.; Witthaut, Kristian; Strobel, Philipp; Schmidt, Peter J.; Schnick, Wolfgang (Angewandte Chemie, 2024)