Growth of Single Crystals of Solid Solutions with the Sillenite Structure

Phase relations in the Bi2O3-TiO2 system

“…However, according to Volkov [18], the minimal titanium oxide content of the variable composition phase Bi 12 Ti x O 20 -δ is reached at the eutectic temperature and is ≈13.5 mol % TiO 2 . Note that the wide homogeneity ranges (≈12.5-15.5 mol % for Bi 12 SiO 20 and Bi 12 GeO 20 and 9.1-18.2 mol % TiO 2 for Bi 12 TiO 20 ) indicated by Maier et al [17] and Lomonov [23] contradict to available literature data.…”

“…In the literature, there are contradictory data on the numbers and compositions of compounds in the Bi 2 O 3 -TiO 2 system [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26]. According to Skanavi [10], there are ten bismuth titanates, which are char acterized by low conductivity and high permittivity.…”

“…Nonetheless, Maier et al for the phase with a sille nite structure indicated a wide range of solid solutions (9.1-18.2 mol % TiO 2 ) [17], but Zhou and Park showed that the homogeneity range of Bi 12 TiO 20 on the side of bismuth oxide does not exceed 0.5 mol % (Fig. 1a) [18].…”