Theoretical study of the multiferroic properties of DyFeWO $$_6$$ 6

I. N. Apostolova, A. T. Apostolov and J. M. Wesselinowa ()
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I. N. Apostolova: University of Forestry
A. T. Apostolov: Civil Engineering and Geodesy
J. M. Wesselinowa: University of Sofia

The European Physical Journal B: Condensed Matter and Complex Systems, 2022, vol. 95, issue 8, 1-8

Abstract: Abstract Magnetization M, specific heat $$C_p$$ C p , polarization P and dielectric constant $$\epsilon $$ ϵ of DyFeWO $$_6$$ 6 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 $$T_N$$ T N is observed. $$C_p$$ C p shows an anomaly at the Neel temperature $$T_N$$ T N which disappears by applying an external magnetic field h. P decreases with increasing h. The antiferromagnetic transition in DyFeWO $$_6$$ 6 is accompanied by a peak in $$\epsilon $$ ϵ . With increasing magnetic field the peak decreases, shifts to smaller $$T_N$$ T N values, and for strong magnetic fields vanishes. The magnetic field behaviour of P and $$\epsilon $$ ϵ is an evidence for the multiferroicity of DyFeWO $$_6$$ 6 . The observed results are in good qualitative agreement with the existing experimental data. Graphic abstract

Date: 2022
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DOI: 10.1140/epjb/s10051-022-00396-9

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