Growth and Properties of Single Crystals of Noncentrosymmetric Na₃VO₂B₆O₁₁

Abstract

A new nonlinear optical crystal, Na 3 VO 2 B 6 O 11 , has been grown by the top-seeded solution growth method using a Na 2 CO 3 -V 2 O 5 flux. The structure of the compound was determined by single-crystal X-ray diffraction. It crystallizes in the noncentrosymmetric orthorhombic system, space group P2 1 2 1 2 1 , with cell parameters a = 7.7359(9) A ˚, b = 10.1884(12) A ˚, c = 12.5697(15) A ˚, V = 990.7(2) A ˚3, and Z = 4. Na 3 VO 2 B 6 O 11 has a three-dimensional structure consisting of hexaborate groups connected by VO 4 tetrahedra with the sodium atoms distributed in channels through out the three-dimensional network. The refractive indices have been measured by the minimum deviation technique and fit to the Sellmeier equations. Nonlinear optical measurements on the compound demonstrate that the material has second harmonic generation properties, with an efficiency approximately the same as that of KH 2 PO 4 .

Synthesis, crystal structure and optical properties of a new lead fluoride borate with isolated [B9O21]15− unit

“…Pb 8 [20,21]. To the best of our knowledge, a Fundamental Building Blocks (FBBs) with nine boron atoms 9:[(9:6△ + 3 T)] is found for the first time in this material.…”

“…These data can be obtained free of charge from The Cambridge Crystallographic Data Centre via www.ccdc.cam.ac.uk/ data_request/cif. The polycrystalline powder X-ray diffraction pattern, IR spectrum, the UV-Vis-NIR Diffuse-Reflectance spectrum, Crystal data and structure refinement for Pb 8 …”

“…To date, inorganic borates have long been a focus of research due to their interesting nonlinear optical, transparency to a wide range of wavelengths, high laser damage tolerance, piezoelectric, luminescent and other useful properties for technical applications. Studies of metal borates have produced a large family of compounds with outstanding physical properties, for example, β-BaB 2 O 4 [4], LiB 3 O 5 [5], CsB 3 O 5 [6], Sr 2 Be 2 B 2 O 7 [9] and Ba 3 Sr 4 (BO 3 ) 3 F 5 [12] are all wellknown nonlinear optical (NLO) crystals [4][5][6][7][8][9][10][11][12]. These achievements inspirit us to explore new borates.…”

Growth, crystal structure and optical properties of layered dibarium cadmium diborate, Ba2Cd(BO3)2

“…Especially, the metal borates with potentially useful physical properties ranging from nonlinear optical (NLO), ferroelectric, piezoelectric to semiconducting behaviors, are of continuing interest [5][6][7][8]. Since the discovery of the excellent NLO crystals such as ␤-BaB 2 O 4 [9], KBe 2 BO 3 F 2 (KBBF) [10] and Sr 2 Be 2 B 2 O 7 (SBBO) [11], alkaline-earth metal borates have been extensively studied.…”

Synthesis, structure and properties of nonlinear optical crystal Li(H 2 O) 4 B(OH) 4 ·2H 2 O

“…A detailed description of the equipment and methodology has been published [26,27]. Since the SHG efficiency shows strong dependency on particle size, Li(H2O)4B(OH)4·2H2O was ground and sieved into distinct particle size ranges < 20, and served as a reference and sieved into the same particle size ranges.…”