Flux crystal growth of Cu2GaBO5 and Cu2AlBO5

Flux growth and phase diversity of the triple oxides of transition metals (Mn,Fe,Ga)2O3in multicomponent fluxes based on Bi2O3–MoO3–B2O3–Na2O

“…Previously, flux systems based on Bi 2 Mo 3 O 12 were used to grow several transition metal oxyborate compounds with warwickite and ludwigite structures. [20][21][22][23][24][25][26] Thus, the ratio of Bi : Mo = 2 : 3 was constant. However, owing to the discovery of the special role of molybdenum oxide in HTCP formation and its influence on the valence of manganese cations, there arose a need to study flux systems with the ratio Bi : Mo, which is different from 2 : 3.…”

“…18 In addressing these problems, multicomponent fluxes based on Bi 2 O 3 -MoO 3 -B 2 O 3 -Na 2 O proved to be efficient upon the crystallization of heterovalent oxyborates of warwickite 18,[20][21][22] and ludwigite. 18,[23][24][25][26] The change in the valence composition of the manganese cations in the crystallizing phases was shown in the case of using the solvent components MoO 3 (or WO 3 ) and Na 2 O (or Li 2 O). An assumption was made that manganese was fixed in the valence state 2+ by MoO 3 , and it was impossible to obtain the Mn 3+ -containing phase without the addition of Na 2 O to the fluxes based on Bi 2 Mo 3 O 12 .…”

Flux Growth and Raman Spectroscopy Study of Cu2CrBO5 Crystals

“…This is the most widelyused method for obtaining single crystal samples of the oxyborates with a ludwigite structure due to the presence of growth anisotropy. Natural faceting of single crystals and the possibility of using different solvent types for individual synthesis of different compounds are undoubtedly some merits of this technique [7].…”