Phase diagram studies for the growth of (Mg,Zr):SrGa$_{12}$O$_{19}$ crystals

TL;DR

This study uses differential thermal analysis to identify optimal conditions for growing Zr, Mg codoped strontium hexagallate crystals, revealing that codoping raises melting points and stabilizes phases, thus expanding the growth window.

Contribution

It provides a detailed phase diagram analysis for Zr, Mg codoped SrGa$_{12}$O$_{19}$ crystals, enhancing understanding of doping effects on melting behavior and phase stability.

Findings

Doped crystals have approximately 60 K higher melting points than undoped ones.

Zr, Mg codoping stabilizes the hexagallate phase.

The growth window for doped crystals is larger than for undoped crystals.

Abstract

By differential thermal analysis a concentration field suitable for the growth of Zr, Mg codoped strontium hexagallate crystals was observed that corresponds well with experimental results from Mateika and Laurien, J. Crystal Growth 52 (1981) 566-572. It was shown that the melting point of doped crystal is ca. 60 K higher than that of undoped crystals. This higher melting points indicates hexagallate phase stabilization by Zr, Mg codoping, and increases the growth window, compared to undoped SrO-Ga$_2$O$_3$ melts.