Author/Authors :
Almeida، نويسنده , , M.A.P. and Cavalcante، نويسنده , , L.S. and Morilla-Santos، نويسنده , , C. and Filho، نويسنده , , P.N. Lisboa and Beltrلn، نويسنده , , A. and Andrés، نويسنده , , J. and Gracia، نويسنده , , L. and Longo، نويسنده , , E.، نويسنده ,
Abstract :
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.
Keywords :
Clusters , Crystal growth , electronic properties , Magnetic measurements
