Theoretical study of the multiferroic properties of DyFeWO6

Magnetization M, specific heat C-p, polarization P and dielectric constant epsilon of DyFeWO6 are investigated for the first time using a microscopic model and the Green's function technique. The magnetic field dependence of M for temperatures below and above T-N is observed. C-p shows an anomaly at the Neel temperature T-N which disappears by applying an external magnetic field h. P decreases with increasing h. The antiferromagnetic transition in DyFeWO6 is accompanied by a peak in epsilon. With increasing magnetic field the peak decreases, shifts to smaller T-N values, and for strong magnetic fields vanishes. The magnetic field behaviour of P and epsilon is an evidence for the multiferroicity of DyFeWO6. The observed results are in good qualitative agreement with the existing experimental data.

Automated summary

This study investigated the magnetic and thermal properties of DyFeWO6 for the first time using a microscopic model and the Green's function technique. The results show that DyFeWO6 exhibits multiferroicity and its properties are influenced by the magnetic field.