A Mrotzek,L Iordanidis,MG Kanatzidis 摘要: Cs1-xSn1-xBi9+xSe15 and Cs1.5-3xBi9.5+xSe15 crystallize in a new structure type which does not belong to but is closely related to the members of the homologous series A(m)[M-6-Se-8](m)[M5+nSe9+n]; the new phases reveal a third...