Growth, optical and electromechanical properties of single-crystalline orthorhombic bismuth triborate

Polarized Raman spectroscopy of delta‐BiB3O6 at 7–350 K

“…The vibrational spectra and lattice dynamics calculations of δ‐BiB 3 O 6 were published earlier; the obtained spectra clearly exhibit significant LO–TO splitting for some polar modes and indicate that the contribution to the NLO response of δ‐BiB 3 O 6 may be associated both with the Bi 3+ ions and BO 4 groups. This one also shows that δ‐BiB 3 O 6 is a promising medium for up‐ and down‐ Raman laser‐frequency converters with the strongest lasing lines at 327, 124, and 99 cm –1 . However, in earlier studies, the range of Raman spectra was limited down to 100 cm −1 under ambient conditions.…”

“…The structure of the α‐phase consists of chains of [BO 3 ] triangles and [BO 4 ] tetrahedrons in 1 : 2 ratio. First principles simulations of its electronic structure showed that optical nonlinearity is determined mainly by [BO 4 ] tetrahedrons . Among other phases of BiB 3 O 6 , only γ and δ comprise [BO4] tetrahedrons exclusively; and centrosymmetric γ phase is of scant interest for nonlinear optics, while the structure of δ phase (P ca 2 1 , Z = 4) seems to be more attractive for such applications .…”

δ-BIBO:Nd crystals as promising laser operated piezoelectric materials

“…Among three stable polymorphs of BiB 3 O 6 that can be obtained in form of bulk single crystals from stoichiometric melt [8], d-BiB 3 O 6 phase crystallizes below 680°C [9]. The a phase crystallizes at temperatures above 710°C [10], while c phase is stable in temperature range 680-710°C [11].…”

Pressure-induced phase transitions in acentric BaHf(BO3)2

“…For instance, six different polymorphs are known for BiB 3 O 6 [8][9][10][11][12]. The α-, β-and γ-BiB 3 O 6 could be obtained at ambient pressure [8].…”

“…δ-BiB 3 O 6 was obtained for the first time using both hightemperature (820 1C) and high-pressure (5.5 GPa) conditions [9]. However, it was later shown that δ-BiB 3 O 6 can also be grown at ambient pressure when the crystallization process is performed below 680 1C [3,10]. The two remaining polymorphs, ε-and ξ-BiB 3 O 6 can be stabilized only at elevated pressures [11,12].…”