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Formation of La-based perovskite compounds, LaBO3 (B: Fe, Al, Mn, Co and Ni), in supercritical water was examined using a batch-type reactor vessel. Investigations of processing conditions revealed that the heat treatment of the equimolar nitrate solution of La and Fe with pH 8 at 450 °C and 30 MPa for 15 min was optimal for obtaining LaFeO3 as a single phase. Analysis of the products prepared under...
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