Phase Relations in the Ternary System Fe2O3—FeO—YFeO3
- 1 April 1962
- journal article
- Published by Wiley in Journal of the American Ceramic Society
- Vol. 45 (4) , 162-165
- https://doi.org/10.1111/j.1151-2916.1962.tb11112.x
Abstract
Equilibrium data are presented for the ternary system Fe2O3–FeO–YFeO3 in ambient atmospheres of air, oxygen, and carbon dioxide at melting temperatures. The temperature range for the coexistence of yttrium‐iron garnet and oxide liquid decreases with decreasing oxygen partial pressure from 127°C in oxygen to 86° C in air to 28° C in carbon dioxide. In addition, the composition of the garnet phase crystallizing from these melts changes with variations of temperature and oxygen pressure. The experimental data are discussed in terms of a polythermal‐polybaric model of the system. Some conclusions are drawn as to the limiting conditions in different atmospheres for the growth and the resulting composition of yttrium‐iron garnet crystals in equilibrium with ternary oxide liquids.Keywords
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