X-ray Diffraction and Microstructural Investigation of the Al2O3-La2O3-TiO2 System |
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| Authors: | Sre&# o &# kapin,Drago Kolar,Danilo Suvorov |
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| Affiliation: | "Jožef Stefan" Institute, University of Ljubljana, Jamova 39, 61000 Ljubljana, Slovenia |
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| Abstract: | The ternary phase diagram of Al2O3-La2O3-TiO2 at 1400°C was determined with 12 compatibility triangles. Al2O3 stabilizes the A-site-deficient La2/3TiO3 perovskite structure. According to XRD and microstructural investigations, the solid solution extends along the La2/3TiO3-LaAlO3 tie line from at least 4 mol% LaAlO3 to pure LaAlO3. With increasing LaAlO3 content, the stabilized La2/3TiO3 structure changes from orthorombic via tetragonal to cubic. |
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