Thermal Analysis and Phase Relations in the Pseudobinary System La2W2O9-Li(2)W(2)o(7)

Author(s)

de Moraes, Jair Ricardo ^[1] ; Klimm, Detlef ^[2] ; Mazzocchi, Vera Lucia ^[1] ; Ramos Parente, Carlos Benedicto ^[1] ; Ganschow, Steffen ^[2] ; Baldochi, Sonia Licia ^[1]

Affiliation

^[1] IPEN CNEN SP, BR-05508000 Sao Paulo - Brazil

^[2] IKZ Berlin, Leibniz Inst Crystal Growth, D-12489 Berlin - Germany

• Document type: Journal article
• Source: Crystal Growth & Design; v. 14, n. 11, p. 5593-5598, NOV 2014.
• Web of Science Citations: 0

Abstract

The pseudobinary phase diagram La2W2O9Li2W2O7, which is an isopleth section of the Li2OWO3La2O3 ternary, is described for the first time. It contains the 1:1 intermediate phase LiLa(WO4)(2)(ss) = x Li2W2O7(1 x)La2W2O9 with a homogeneity region 0.48 = x = 0.546. LiLa(WO4)(2)(ss) is a prospective laser host material, and single-crystal fibers could be grown by a micro-pulling-down technique. LiLa(WO4)(2) undergoes peritectic melting at 998 +/- 5 degrees C for x = 0.48. A eutectic point exists between LiLa(WO4)(2) and Li2W2O7 at 722 +/- 5 degrees C and 90 mol % Li2W2O7. (AU)

• FAPESP's process: 08/10721-9 - Microcrystals preparation study of LiLa(WO4)2:RE3+ for photonic applications
• Grantee: Jair Ricardo de Moraes
• Support Opportunities: Scholarships in Brazil - Doctorate