Abstract
A lever rule was applied to data concerning the compositions and proportions of secondary phases coexisting with a Ca3TaGa3Si2O14 (CTGS) matrix to determine the boundary compositions of the solid-solution region for CTGS at 1320 °C, as a means of ascertaining the solid-solution for the langasite-type phase in the quaternary CaO-Ta2O5-Ga2O3-SiO2 system. The compositions and proportions of secondary phases were assessed by electron probe micro-analysis as well as through back-scattered electron images. The experimental results showed that the narrow solid-solution region for CTGS is located in a Ta-poor, Ga-poor and Si-rich region relative to its stoichiometric composition.
Original language | English |
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Pages (from-to) | 111-117 |
Number of pages | 7 |
Journal | Journal of Crystal Growth |
Volume | 415 |
DOIs | |
Publication status | Published - 2015 Apr 1 |
Keywords
- A1. Lever rule
- A1. Phase diagrams
- A1. Solid solution
- B1. Oxides
ASJC Scopus subject areas
- Condensed Matter Physics
- Inorganic Chemistry
- Materials Chemistry