Ba_2.5Pb_1.5B₁₂O₂₂: structural transformation from a centrosymmetric to a noncentrosymmetric space group by introducing Pb into Ba₂B₆O₁₁

Abstract

A new congruent-melting lead barium borate, Ba2.5Pb1.5B12O22 was synthesized via the high-temperature solid-state reaction under atmospheric pressure. It crystallizes in the noncentrosymmetric space group Cmc21 with a unit cell of...

Na3YB8O15: a new rare-earth borate with an infinite one-dimensional [B8O15]∞chain and a short ultraviolet cutoff edge

“…The absorption bands appearing at around 685-512 cm −1 can be attributed to the bending vibrations of the BO 3 and BO 4 groups. [71][72][73][74] These characteristic peaks in the IR spectrum suggest the existence of both BO 3 and BO 4 groups in the structure of Na 3 YB 8 O 15 , which is consistent with the results of single crystal XRD.…”

Li2PbB2O5: A Pyroborate with Large Birefringence Induced by the Synergistic Effect of Stereochemical Active Lone Pair Cations and π-Conjugated [B2O5] Groups

“…It still has a reflectance of about 6.05% at 269 nm. Through the conversion of the Kubelka−Munk function (Figure 2c), the experimental band gap of 4.0 eV was obtained, which is comparable to that of Pb-containing borates such as Ba 2.5 Pb 1.5 B 12 O 22 (3.88 eV), 28 Pb 6 O(B 6 O 14 ) (3.49 eV), 29 and Pb 4 B 6 O 13 (3.21 eV). 30 This indicates that Li 2 PbB 2 O 5 has a potential application value in the UV region.…”

Oxychalcogenides as Promising Ultraviolet Nonlinear Optical Candidates: Experimental and Theoretical Studies of AEGeOS2(AE = Sr and Ba)

“…Such SHG efficiencies are moderate as compared to the reported materials, such as Ba 3 P 3 O 10 Cl (0.6 × KDP), 33 Li 3 AlSiO 5 (0.8 × KDP), 21 CsSiP 2 O 7 F (0.7 × KDP), 75 K 2 SrP 4 O 12 (0.5 × KDP), 76 Ba 3 Ca 4 (BO 3 ) 3 (SiO 4 )Cl (0.6 × KDP), 77 Rb 2 SO 4 SbF 3 (0.3 × KDP), 78 and Ba 2.5 Pb 1.5 B 12 O 22 (0.9 × KDP). 79 The SHG response of BaGeOS 2 is also competitive with some excellent UV NLO materials, such as (NH 4 )NaLi 2 (SO 4 ) 2 (1.1 × KDP), 80 LaBSiO 5 (1.1 × KDP), 81 and CsNaMgP 2 O 7 (1.1 × KDP). 82 Furthermore, the power LIDT as another significant parameter for NLO materials was evaluated by a single pulse test method 43 at 1064 nm.…”

“…In addition, in the particle size range from 150 to 210 μm, the SHG intensities of SrGeOS 2 and BaGeOS 2 are about 1.07 and 0.71 times that of KDP, respectively. Such SHG efficiencies are moderate as compared to the reported materials, such as Ba 3 P 3 O 10 Cl (0.6 × KDP),33 Li 3 AlSiO 5 (0.8 × KDP),21 CsSiP 2 O 7 F (0.7 × KDP),75 K 2 SrP 4 O 12 (0.5 × KDP),76 Ba 3 Ca 4 (BO 3 ) 3 (SiO 4 )Cl (0.6 × KDP),77 Rb 2 SO 4 SbF 3 (0.3 × KDP),78 and Ba 2.5 Pb 1.5 B 12 O 22 (0.9 × KDP) 79. The SHG response of BaGeOS 2 is also competitive with some excellent UV NLO materials, such as (NH 4 )NaLi 2 (SO 4 ) 2 (1.1 × KDP),80 LaBSiO 5 (1.1 × KDP),81 and CsNaMgP 2 O 7 (1.1 × KDP) 82.…”