Complex magnetic interactions in geometrically frustrated TbOF

Fuente: arXiv
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Auteurs principaux: Witte, Pim, Sheptyakov, Denis, Lhotel, Elsa, Artrith, Nongnuch, de Hoogh, Robin, Perversi, Giuditta, Lefmann, Kim, Kamminga, Machteld E.
Format: Preprint
Publié: 2026
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author Witte, Pim
Sheptyakov, Denis
Lhotel, Elsa
Artrith, Nongnuch
de Hoogh, Robin
Perversi, Giuditta
Lefmann, Kim
Kamminga, Machteld E.
author_facet Witte, Pim
Sheptyakov, Denis
Lhotel, Elsa
Artrith, Nongnuch
de Hoogh, Robin
Perversi, Giuditta
Lefmann, Kim
Kamminga, Machteld E.
contents We have identified TbOF as a unique frustrated and mixed-anion lattice, hosting unconventional magnetism. By means of magnetization, specific heat and neutron diffraction measurements down to 90 mK, as well as DFT calculations, we present a comprehensive study of the magnetic and structural properties of TbOF. We show that at 9.7 K, TbOF undergoes a structural phase transition accompanied by short-range magnetic correlations, in contrast to previously proposed long-range antiferromagnetic order. At lower temperatures, we observe two magnetic ordering transitions, consisting of incommensurate spin density waves and antiferromagnetic and ferromagnetic correlations. Furthermore, we observe metastable and hysteresis behavior below 2.0 K, highlighting the richness of complex magnetic interactions in TbOF. These results uniquely clarify the magnetic phase diagram of TbOF and highlight the intricate interplay between structure and magnetism in rare-earth oxyfluorides.
format Preprint
id arxiv_https___arxiv_org_abs_2603_23130
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Complex magnetic interactions in geometrically frustrated TbOF
Witte, Pim
Sheptyakov, Denis
Lhotel, Elsa
Artrith, Nongnuch
de Hoogh, Robin
Perversi, Giuditta
Lefmann, Kim
Kamminga, Machteld E.
Strongly Correlated Electrons
We have identified TbOF as a unique frustrated and mixed-anion lattice, hosting unconventional magnetism. By means of magnetization, specific heat and neutron diffraction measurements down to 90 mK, as well as DFT calculations, we present a comprehensive study of the magnetic and structural properties of TbOF. We show that at 9.7 K, TbOF undergoes a structural phase transition accompanied by short-range magnetic correlations, in contrast to previously proposed long-range antiferromagnetic order. At lower temperatures, we observe two magnetic ordering transitions, consisting of incommensurate spin density waves and antiferromagnetic and ferromagnetic correlations. Furthermore, we observe metastable and hysteresis behavior below 2.0 K, highlighting the richness of complex magnetic interactions in TbOF. These results uniquely clarify the magnetic phase diagram of TbOF and highlight the intricate interplay between structure and magnetism in rare-earth oxyfluorides.
title Complex magnetic interactions in geometrically frustrated TbOF
topic Strongly Correlated Electrons
url https://arxiv.org/abs/2603.23130