Element selective magnetism in Ho 0.5 Nd 0.5 Fe 3 (BO 3 ) 4 single crystal probed with hard X-ray magnetic circular dichroism

Mikhail Platunov*, Natalia Kazak, Viacheslav Dudnikov, Vladislav Temerov, Irina Gudim, Yurii Knyazev, Sergey Gavrilkin, Vadim Dyadkin, Iurii Dovgaliuk, Dmitry Chernyshov, Amir Hen, Fabrice Wilhelm, Andrei Rogalev, Sergei Ovchinnikov

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

We present a study of a Ho 0.5 Nd 0.5 Fe 3 (BO 3 ) 4 single crystal aiming at understanding the roles of each magnetic sublattices in magnetic transitions at low temperatures. The crystal structure is determined to have the R32 symmetry in whole studied temperature range but the crystal appears to be racemic. Element selective magnetic properties studied with X-ray magnetic circular dichroism at the L 2,3 -edges of Ho and Nd, and at the Fe K-edge at T = 3 K under magnetic fields of ±17 T are compared with the results of macroscopic magnetization measurements in pure and substituted crystals. All three magnetic sublattices are shown to be strongly coupled and to undergo a spin-reorientation transition when magnetic field is applied along the trigonal c-axis. On the contrary, when magnetic field is applied in the ab-plane only the holmium atoms exhibit a sizeable magnetization jump. This result allows us to conclude that the spin-flop transitions observed in macroscopic magnetization curves and associated anomalies of electric polarization are due to the Ho 3+ magnetic moment reorientation.

Original languageAmerican English
Pages (from-to)312-316
Number of pages5
JournalJournal of Magnetism and Magnetic Materials
Volume479
DOIs
StatePublished - 1 Jun 2019
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2019 Elsevier B.V.

Keywords

  • Magnetic properties
  • X-ray absorption
  • X-ray magnetic circular dichroism

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