Thermal and some physical properties of glasses in the La2O3−CaO−B2O3 ternary system

Characteristics of La2CaB10O19 crystallization from glass

“…5). In our previous work, LCB was found to be dominant in a glass of the same composition after an isothermal treatment of 1 h at 815°C [13]. Moreover, the light microscopy image of the sample heated to T DTA = 812°C shows the presence of a uniform crystalline phase in the glass matrix (Fig.…”

“…We found that LCB is the dominant crystalline phase to crystallize from isothermally heat treated glasses of near-stoichiometric compositions [13].…”

“…The bars were immediately annealed for 0.5 h in another electric box furnace and left in it to cool to room temperature. The annealing temperature, T an , was determined as T an = T g + 15°C, where T g is the glass transition temperature (~670°C [13]). The temperature accuracy of the electric furnaces was ±2°C.…”

Crystallization and sinterability of glass-ceramics in the system La2O3–SrO–B2O3

“…Lanthanide materials showed improved NLO properties which are explained by the f-f electron transition. [3][4][5][6]. Addition of lanthanum oxide in the alkaline earth borate glasses improves optical properties and chemical durability [7].…”

“…The crystallization behavior of glasses from the ternary system La 2 O 3 -CaO-B 2 O 3 was previously the subject of investigation and the crystalline phase La 2 CaB 10 O 19 with the desired properties was identified after heat treatment of these glasses [4][5][6].…”