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This study focuses on exploring new Gd-based intermetallic compounds with honeycomb structures to elucidate intriguing magnetic phenomena, particularly the presence of magnetic skyrmions. The compound Gd2Rh3Al9, synthesized via high-temperature and high-pressure methods, exhibits an orthorhombic structure characterized by a distorted Gd-honeycomb network. Comprehensive investigations of its temperature-dependent behavior in polycrystalline samples reveal sequential antiferromagnetic transitions occurring at T1 = 13.6 K and T2 = 4.1 K. These transitions arise from the antiferromagnetic interaction between the magnetic moments of Gd3+ (S = 7/2) situated within the distorted honeycomb layer. Despite not observing a skyrmion phase in this compound, the data provide valuable insights into the complex behavior of Gd-based intermetallic compounds and their potential as hosts for novel magnetic phases. Further research, particularly using single crystals, is needed to explore the possibility of forming a skyrmion phase in this compound.

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• Creative Commons BY-NC-ND Attribution-NonCommercial-NoDerivs 4.0 International
  

  © 2023. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/.

Keyword: Gd2Rh3Al9, Intermetallic compounds, High-pressure synthesis, Magnetic skyrmion

Date published: 2023-12-04

Publisher: Elsevier BV

Journal:

• JOURNAL OF SOLID STATE CHEMISTRY (ISSN: 00224596) vol. 330 p. 124487-124487

Funding:

• JSPS JP22H04601 (Grant-in-Aid for Scientific Research)
• Kazuchika Okura Memorial Foundation 2022-11

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.4295

First published URL: https://doi.org/10.1016/j.jssc.2023.124487

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Updated at: 2025-12-04 08:30:28 +0900

Published on MDR: 2025-12-04 08:22:33 +0900