Abstract
Metastable Lu x FeO 3 polycrystals (0.65 < x < 1.35) have been synthesized by containerless processing. Synchrotron-radiation powder diffraction analysis and scanning electron microscope observation have shown them to be in three metastable phases. The crystal structure of one of these phases was assigned to a polar space group P6 3 cm with the composition of LuFeO 3 , which has a similar structure as that of hexagonal YMnO 3 . A characteristic dielectric relaxation with strong frequency dispersion of the hexagonal LuFeO 3 was observed above room temperature.
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