Phase Relations In The Pseudo-Ternary System La2O3–SrO–Fe2O3 |
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Authors: | Anita Fossdal Mari-Ann Einarsrud Tor Grande |
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Affiliation: | Department of Materials Technology, Norwegian University of Science and Technology, 7491 Trondheim, Norway |
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Abstract: | The phase relations in the pseudo-ternary system La2O3–SrO–Fe2O3 have been investigated in air. Isothermal sections at 1100° and 1300°C are presented based on X-ray diffraction and thermal analysis of annealed samples. Extended solid solubility was observed for the compounds Sr n +1− v La v Fe n O3 n +1−δ ( n =1, 2, 3, and ∞) and Sr1− x La x Fe12O19, while only limited solubility of La in Sr4− z La z Fe6O13±δ was observed. At high Fe2O3 content, a liquid with low La2O3 content was stable at 1300°C. |
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