X-ray natural circular dichroism imaging of multiferroic crystals

Mikhail S. Platunov*, Irina A. Gudim, Elena N. Ovchinnikova, Ksenia A. Kozlovskaya, Fabrice Wilhelm, Andrei Rogalev, Amir Hen, Vsevolod Y. Ivanov, Alexander A. Mukhin, Vladimir E. Dmitrienko

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

The polarizing spectroscopy techniques in visible range optics have been used since the beginning of the 20th century to study the anisotropy of crystals based on birefringence and optical activity phenomena. On the other hand, the phenomenon of X-ray optical activity has been demonstrated only relatively recently. It is a selective probe for the element-specific properties of individual atoms in non-centrosymmetric materials. We report the X-ray Natural Circular Dichroism (XNCD) imaging technique which enables spatially resolved mapping of X-ray optical activity in non-centrosymmetric materials. As an example, we present the results of combining micro-focusing X-ray optics with circularly polarized hard X-rays to make a map of enantiomorphous twinning in a multiferroic SmFe3 (BO3)4 crystal. Our results demonstrate the utility and potential of polarization-contrast imaging with XNCD as a sensitive technique for multiferroic crystals where the local enantiomorphous properties are especially important. In perspective, this brings a novel high-performance method for the characterization of structural changes associated with phase transitions and identification of the size and spatial distribution of twin domains.

Original languageAmerican English
Article number531
JournalCrystals
Volume11
Issue number5
DOIs
StatePublished - May 2021

Bibliographical note

Funding Information:
Acknowledgments: This research used the ID12 beamline of the European Synchrotron Radiation Facility. The authors are very grateful to P. Voisin (ESRF) for his assistance during the experiment. M.S.P. acknowledges support from the Russian Science Foundation [grant 19-72-00002]. K.A.K. acknowledges support from the Russian Foundation for Basic Research (project no. 19-52-12029 and project no. 19-02-00483). V.E.D. was partly supported by the Ministry of Science and Higher Education of the Russian Federation within the State assignment FSRC “Crystallography and Photonics” RAS. V.Y.I. and A.A.M. were supported by the Russian Science Foundation [grant 16-12-10531]. The authors acknowledge M. Molokeev (Kirensky Institute of Physics) for fruitful discussions.

Funding Information:
Funding: This research was funded by the Russian Science Foundation (grant 19-72-00002). K.A.K. acknowledges support from the Russian Foundation for Basic Research (project no. 19-52-12029 and project no. 19-02-00483). V.E.D. was partly supported by the Ministry of Science and Higher Education of the Russian Federation within the State assignment FSRC “Crystallography and Photonics” RAS. V.Y.I. and A.A.M. were supported by the Russian Science Foundation [grant 16-12-10531].

Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Keywords

  • Mapping
  • Multiferroics
  • Twinning
  • X-ray Natural Circular Dichroism
  • X-ray optical activity

Fingerprint

Dive into the research topics of 'X-ray natural circular dichroism imaging of multiferroic crystals'. Together they form a unique fingerprint.

Cite this