Solubilities, Densities and Refractive Indices for the Two Ternary Systems (Li2SO4 + LiB5O8 + H2O) and (LiCl + LiB5O8 + H2O) at 298.15 K and 101.325 kPa

Optimization of Functional Building Blocks Generates a Substantial Improvement in Birefringence from Sn2OSO4 to Sn3O2(OH)(HSO4)

“…Sn 3 O 2 (OH)(HSO 4 ) notably exhibits significantly higher birefringence compared to Sn 2 OSO 4 . Moreover, the birefringence of Sn 3 O 2 (OH)(HSO 4 ) not only surpasses that of some reported traditional alkali metal and alkaline earth metal sulfate and phosphate crystals such as Li 5 Cs(SO 4 ) 3 (0.018@1064 nm), Li 2 SO 4 ·H 2 O (0.023@1064 nm), Rb 2 Mg(SO 4 ) 4 (0.0175@534 nm), KH 2 PO 4 (0.034@1064 nm), LiCs 2 PO 4 (0.008@1064 nm), but also compares favorably to certain sulfate and phosphate crystals equipped with other functional building blocks, such as Sn 2 PO 4 F (0.126@546 nm) . Sb 6 O 7 (SO 4 ) 2 (0.052@1064 nm), Hg 3 O 2 SO 4 (0.10@546 nm), K 4 Sb(SO 4 ) 3 Cl (0.066@546 nm), CsSbF 2 SO 4 (0.112@1064 nm), RbSbSO 4 F 2 (0.10@1064 nm), Na 3 Sc 2 (PO 4 ) 2 F 3 (0.063@1064 nm) .…”

“…However, the highly symmetrical SO 4 tetrahedral structure results in small optical anisotropy. In the absence of additional birefringence-active functional groups, this leads to low birefringence, such as Li 5 Cs(SO 4 ) 3 (0.018@1064 nm), Li 2 SO 4 ·H 2 O (0.023@1064 nm), further impeding the development of sulfate as a viable material for optical crystals.…”

Structural and optical properties of lithium borate glasses under extreme conditions of ion irradiation

“…It is noted that as Ni 7+ irradiation fluence increases the polycrystalline nature of the glass ceramic also increases. The XRD of Ni 7+ irradiated 1B13 was analysed and figure 4(b) shows lithium pentaborate pentahydrate (B5H10LiO13) that possesses a monoclinic structure with standard diffraction pattern (PDF#27-1224) [44]. Refinement was carried out using Maud software where the crystalline phase of sborgite (NaB5O6(OH)4.3H2O) (with standard diffraction number PDF#24-1056) was used to refine the XRD where the maximum peaks are matched [45].…”

Speciation and Phase Equilibria of Aqueous Boric Acid and Alkali Metal Borates from Ambient to Hydrothermal Conditions: A Comprehensive Thermodynamic Model

“…from natural resources. These include extensive solubility, speciation (pH and Raman spectroscopic), and calorimetric measurements. − All of these quantitative results are valuable sources of information that provide insights into the complex chemistry of aqueous boric acid and borate solutions and are an excellent foundation for the development of a more robust and reliable thermodynamic model for these systems. These data provide additional opportunities for testing and validating the model.…”