Evidence for Conical Magnetic Structure in M-type BaFe12O19 Hexaferrite: A Combined Single-Crystal XMCD and Neutron Diffraction Study

Keshav Kumar; Shrawan K. Mishra; Sanjay Singh; Ivan Baev; Michael Martins; Fabio Orlandi; Pascal Manuel; Dhananjai Pandey

doi:10.1002/pssr.202000506

Evidence for Conical Magnetic Structure in M-type BaFe12O19 Hexaferrite: A Combined Single-Crystal XMCD and Neutron Diffraction Study

Materials Science 2023-12-20 v1

Authors: Keshav Kumar , Shrawan K. Mishra , Sanjay Singh , Ivan Baev , Michael Martins , Fabio Orlandi , Pascal Manuel , Dhananjai Pandey

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Abstract

The magnetic ground state of BaFe12O19 (BFO) was investigated using X-ray absorption at 1.2 K and 1.5 K, respectively. The XMCD measurements on single-crystals of BFO in grazing incidence geometry reveal the canting of the spins away from the c-axis of the hexagonal unit cell. Single-crystal neutron diffraction studies reveal magnetic satellite peaks along the 00l reciprocal lattice row around the forbidden l = 2n +/- 1 positions confirming conical-type magnetic structure in the ground state of BFO. The observation of the conical magnetic structure of BFO opens the possibility of type-II multiferroicity in undoped BFO also.

Keywords

BaFe12O19 hexaferrite conical magnetic structure XMCD neutron diffraction multiferroicity

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@article{arxiv.2312.12001,
  title  = {Evidence for Conical Magnetic Structure in M-type BaFe12O19 Hexaferrite: A Combined Single-Crystal XMCD and Neutron Diffraction Study},
  author = {Keshav Kumar and Shrawan K. Mishra and Sanjay Singh and Ivan Baev and Michael Martins and Fabio Orlandi and Pascal Manuel and Dhananjai Pandey},
  journal= {arXiv preprint arXiv:2312.12001},
  year   = {2023}
}

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15 pages, 4 figures

Evidence for Conical Magnetic Structure in M-type BaFe12O19 Hexaferrite: A Combined Single-Crystal XMCD and Neutron Diffraction Study

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