The modulated antiferromagnetic structures in multiferroic FeVO4: a 57Fe M\"ossbauer spectroscopy investigation

D. Colson; A. Forget; P. Bonville

The modulated antiferromagnetic structures in multiferroic FeVO4: a 57Fe M\"ossbauer spectroscopy investigation

Materials Science 2014-09-25 v1 Strongly Correlated Electrons

Authors: D. Colson , A. Forget , P. Bonville

Abstract

We present a 57Fe M\"ossbauer spectroscopy study of the two incommensurate magnetic phases in the multiferroic material FeVO4. We devise lineshapes appropriate for planar elliptical and collinear modulated magnetic structures and show that they reproduce very well the M\"ossbauer spectra in FeVO4, in full qualitative agreement with a previous neutron diffraction study. Quantitatively, our spectra provide precise determinations of the characteristics of the elliptical and modulated structures which are in good agreement with the neutron diffraction results. We find that the hyperfine field elliptical modulation persists as T goes to 0, which we attribute to an anisotropy of the hyperfine interaction since a moment modulation is forbidden at T=0 for a spin only ion like Fe3+.

Keywords

multiferroic fevo4 antiferromagnetic structures m"ossbauer spectroscopy incommensurate magnetic phases hyperfine field neutron diffraction

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@article{arxiv.1409.6942,
  title  = {The modulated antiferromagnetic structures in multiferroic FeVO4: a 57Fe M\"ossbauer spectroscopy investigation},
  author = {D. Colson and A. Forget and P. Bonville},
  journal= {arXiv preprint arXiv:1409.6942},
  year   = {2014}
}

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14 pages, 5 figures

The modulated antiferromagnetic structures in multiferroic FeVO4: a 57Fe M\"ossbauer spectroscopy investigation

Abstract

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