Abstract
Hexagonal, orthorhombic, and cubic ScxLu1-xFeO3 (0 ≤ x ≤ 1) nanocrystals were obtained through solution combustion synthesis with subsequent heat treatment. The structure and phase transformations of the nanocrystals were comprehensively characterized using EDX, PXRD, and 57Fe MS methods. It was observed that an increase in the Sc content within the ScxLu1-xFeO3 structure led to a phase transition from the orthorhombic phase to the hexagonal phase, and further to the bixbyite-type cubic phase. It was determined that the hexagonal phase was present throughout the entire doping range. Hexagonal substitutional solid solutions were stabilized with the content of scandium cations in range of 50–80 mol.%. The substitution limits of scandium for lutetium were determined for each phase. Based on the obtained results, the possibility of controlled synthesis of ScxLu1-xFeO3 nanoparticles with desired composition and crystal structure was successfully demonstrated, that open up the way to the design of novel advanced functional materials.
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