Co-substitution design: a new glaserite-type rare-earth phosphate K₂RbSc(PO₄)₂ with high structural tolerance

Abstract

An alkali rare-earth phosphate K2RbSc(PO4)2 was successfully obtained by the derivative of glaserite-type K3Na(SO4)2 by co-substitution of K(1)O12→RbO12, K(2)O10→KO7, NaO6→ScO6 and SO4→PO4, meanwhile maintaining the original anionic framework. K2RbSc(PO4)2 exhibits...

Novel antimony phosphates with enlarged birefringence induced by lone pair cations

“…In Fig. S4,† the cutoff edge of CsSbPO is about 213 nm (corresponding to a band gap of 5.82 eV using the Kubelka–Munk equation), which is comparable to the ones of other phosphates, such as LiMP 2 O 6 (M = Rb, Cs) (<210 nm), 78 LiZnP 3 O 9 (204 nm), 79 CsPbP 3 O 9 (<220 nm), 80 K 2 RbSc(PO 4 ) 2 (<207 nm), 81 K 3 Al 2 (PO 4 ) 3 (238 nm), 82 and (H 3 O)Ca 2 Zn 3.5 (PO 4 ) 4 (218 nm). 83 The results speculate that CsSbPO can be used as potential UV optical materials.…”