Electronic structure and magnetic properties of FeWO4 nanocrystals synthesized by the microwave-hydrothermal method

This communication reports that FeWO4 nanocrystals were successfully synthesized by the microwave-hydrothermal method at 443 K for 1 h. The structure and shape of these nanocrystals were characterized by X-ray diffraction, Rietveld refinement, and transmission electron microscopy. The experimental results and first principles calculations were combined to explain the electronic structure and magnetic properties. Experimental data were obtained by magnetization measurements for different applied magnetic fields. Theoretical calculations revealed that magnetic properties of FeWO4 nanocrystals can be assigned to two magnetic orderings with parallel or antiparallel spins in adjacent chains. These factors are crucial to understanding of competition between ferro- and antiferromagnetic behavior.

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► Monophasic FeWO4 nanocrystals were synthesized by the microwave-hydrothermal method.
► Rietveld refinement and clusters model for monoclinic structure
► Magnetic properties of FeWO4 nanocrystals at different temperatures