Na₁₁Ta₈P₇O₄₃: (Ta₈O₃₃) bi-capped triangular prisms connected by PO₄ groups resulting in a phase-matched second harmonic response

Abstract

Great efforts have been paid to synthesize nonlinear optical crystals with efficient second harmonic responses. Herein, a tantalum phosphate crystal Na11Ta8P7O43 with moderate second harmonic response is obtained by using...

[C(NH2)3]6Mo7O24: A Guanidinium Molybdate as a UV Nonlinear Optical Crystal with Large Birefringence

“…In general, the macroscopic crystal structure is determined by the fundamental motifs that construct the crystal. The functional building blocks (FBBs) used to construct NCS crystals mainly contain the following categories: (i) planar anionic groups with a π-conjugated system, including NO 3 – , CO 3 2– , BO 3 3– , and B 3 O 6 3– ; − (ii) d 0 transition metal (TM) cations with second-order Jahn–Teller (SOJT) distortion, such as V 5+ , Nb 5+ , Ta 5+ , Mo 6+ , and W 6+ ; − (iii) cations with stereochemically active lone electron pair, e.g., Pb 2+ , Bi 3+ , Se 4+ , Te 4+ , I 5+ , etc. − …”