Abstract
The density of Ga2O3 liquid in equilibrium with air has been measured at 18000 to 19000C using an Ir double-bob Archimedean method. The data yield the following description of the density of Ga2O3 liquid: ρ= 4.8374(84)–0.00065(12)(T −18500C). This density-temperature relationship is compared with the partial molar volume of Ga2O3 in glasses in the systems CaO–Ga2O3–SiO2 and Na2O–Ga2O3–SiO2, corrected to the glass transition temperature using thermal expansivities. The comparison illustrates that a positive excess volume term is required in these systems at low temperature. This observation is similar to those deduced from studies of the partial molar volumes of Fe2O3 and Al2O3 in silicate melts.
Item Type: | Journal article |
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Faculties: | Geosciences > Department of Earth and Environmental Sciences > Mineralogy, Petrology and Geochemistry |
Subjects: | 500 Science > 550 Earth sciences and geology |
URN: | urn:nbn:de:bvb:19-epub-6027-2 |
Language: | English |
Item ID: | 6027 |
Date Deposited: | 05. Sep 2008, 07:57 |
Last Modified: | 04. Nov 2020, 12:49 |