Structure, optical and luminescence properties of anhydrous samarium iodate Sm3(IO3)9(HIO3)4

Abstract

A new non-centrosymmetric iodate crystal Sm₃(IO₃)₉(HIO₃)₄ has been successfully synthesized by a hydrothermal method. The crystal structure is a three-dimensional network with samarium polyhedra linked by iodate groups. It shows a moderate second harmonic generation response of 1.1 × KH₂PO₄ (KDP). The strongest emission in its luminescence spectrum is located at 600 nm under 403 nm excitation. Hence, Sm₃(IO₃)₉(HIO₃)₄ is a potential orange laser material.