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Article

X-ray Natural Circular Dichroism Imaging of Multiferroic Crystals

1
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia
2
Faculty of Physics, M. V. Lomonosov Moscow State University, 119991 Moscow, Russia
3
ESRF-The European Synchrotron, CS 40220, CEDEX 9, 38043 Grenoble, France
4
Department of Applied Physics, Rachel and Selim School of Engineering, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
5
Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia
6
A. V. Shubnikov Institute of Crystallography, FSRC “Crystallography and Photonics” RAS, 119333 Moscow, Russia
*
Author to whom correspondence should be addressed.
Academic Editor: Sergio Brutti
Crystals 2021, 11(5), 531; https://doi.org/10.3390/cryst11050531
Received: 16 April 2021 / Revised: 2 May 2021 / Accepted: 4 May 2021 / Published: 11 May 2021
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. View Full-Text
Keywords: multiferroics; X-ray optical activity; twinning; mapping; X-ray Natural Circular Dichroism multiferroics; X-ray optical activity; twinning; mapping; X-ray Natural Circular Dichroism
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MDPI and ACS Style

Platunov, M.S.; Gudim, I.A.; Ovchinnikova, E.N.; Kozlovskaya, K.A.; Wilhelm, F.; Rogalev, A.; Hen, A.; Ivanov, V.Y.; Mukhin, A.A.; Dmitrienko, V.E. X-ray Natural Circular Dichroism Imaging of Multiferroic Crystals. Crystals 2021, 11, 531. https://doi.org/10.3390/cryst11050531

AMA Style

Platunov MS, Gudim IA, Ovchinnikova EN, Kozlovskaya KA, Wilhelm F, Rogalev A, Hen A, Ivanov VY, Mukhin AA, Dmitrienko VE. X-ray Natural Circular Dichroism Imaging of Multiferroic Crystals. Crystals. 2021; 11(5):531. https://doi.org/10.3390/cryst11050531

Chicago/Turabian Style

Platunov, Mikhail S., Irina A. Gudim, Elena N. Ovchinnikova, Ksenia A. Kozlovskaya, Fabrice Wilhelm, Andrei Rogalev, Amir Hen, Vsevolod Y. Ivanov, Alexander A. Mukhin, and Vladimir E. Dmitrienko 2021. "X-ray Natural Circular Dichroism Imaging of Multiferroic Crystals" Crystals 11, no. 5: 531. https://doi.org/10.3390/cryst11050531

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