Crystals of stiilwellite-like lanthanum borosilicate were obtained from high-temperature solutions. Lithium and potassium di- and trimolybdates were used as fluxes for silicate systems. In the case of borosilicate crystals, the choice of fluxes was based on the potassium trimolybdate with an excess of potassium fluoride. The composition of grown crystals was studied by electron microprobe analysis, and structural characteristics were determined for the La3BSi2O10. It crystallizes in the orthorhombic system, space group Pbca, with cell dimensions a = 9,977(2), b = 7,269(2), c = 23.410(2) Angstrom, V = 1697.8(6) Angstrom (3), and final agreement factors R = 0.059, R-W = 0,089,
Crystallization and structural characteristics of new borosilicates / Shvanskii, E. V.; Leonyuk, N. I.; Bocelli, G.; Righi, Lara. - In: JOURNAL OF SOLID STATE CHEMISTRY. - ISSN 0022-4596. - 154:1(2000), pp. 312-316. [10.1006/jssc.2000.8855]
Crystallization and structural characteristics of new borosilicates
RIGHI, Lara
2000-01-01
Abstract
Crystals of stiilwellite-like lanthanum borosilicate were obtained from high-temperature solutions. Lithium and potassium di- and trimolybdates were used as fluxes for silicate systems. In the case of borosilicate crystals, the choice of fluxes was based on the potassium trimolybdate with an excess of potassium fluoride. The composition of grown crystals was studied by electron microprobe analysis, and structural characteristics were determined for the La3BSi2O10. It crystallizes in the orthorhombic system, space group Pbca, with cell dimensions a = 9,977(2), b = 7,269(2), c = 23.410(2) Angstrom, V = 1697.8(6) Angstrom (3), and final agreement factors R = 0.059, R-W = 0,089,I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
