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Orthogonality point and intersublattice exchange in Dy2Fe17 determined in strong magnetic fields

Y. Skourski1,*, M. D. Kuz'min2, K. P. Skokov3, N. Shayanfar3, A. V. Andreev4, S. Zherlitsyn1, S. Yasin1,†, L. Zvyagina1, O. Drachenko5 et al.

O. Portugall5 and J. Wosnitza1,6

  • *Contact author: skourski@hzdr.de
  • †Present address: College of Integrative Studies, Abdullah Al Salem University, Khaldiya, Kuwait.
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Phys. Rev. Materials 9, 064404 – Published 10 June, 2025

DOI: https://doi.org/10.1103/scy5-m3j8

Abstract

We report on magnetization measurements of single crystalline Dy2Fe17 in pulsed magnetic fields up to ∼127T. To produce the fields, we used (i) a single- and (ii) a double-coil magnet generating pulses in the 10 ms range, as well as (iii) semidestructive single-turn coils creating pulses of much shorter duration, ∼5µs. We observed steplike transitions at 64.3 and 77.7 T, for fields applied along [100] and [120], respectively. We confirmed the latter transition by ultrasound-velocity measurements using the double-coil magnet. Our data allowed us to locate the orthogonality point of Dy2Fe17 at (μ0H⊥=90T, M⊥=31μB/f.u.) and determine the intersublattice exchange field, μ0Hex=215T.

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Phys. Rev. Materials 9, 064404– Published 10 June, 2025
  • Received 27 March 2025
  • Accepted 23 May 2025
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