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A Stable Pentagonal Bipyramidal Dy(III) Single-Ion Magnet with a Record Magnetization Reversal Barrier over 1000 K
Abstract
Single-molecule magnets (SMMs) with a large spin reversal barrier have been recognized to exhibit slow magnetic relaxation that can lead to a magnetic hysteresis loop. Synthesis of highly stable SMMs with both large energy barriers and significantly slow relaxation times is challenging. Here, we report two highly stable and neutral Dy(III) classical coordination compounds with pentagonal bipyramidal local geometry that exhibit SMM behavior. Weak intermolecular interactions in the undiluted single crystals are first observed for mononuclear lanthanide SMMs by micro-SQUID measurements. The investigation of magnetic relaxation reveals the thermally activated quantum tunneling of magnetization through the third excited Kramers doublet, owing to the increased axial magnetic anisotropy and weaker transverse magnetic anisotropy. As a result, pronounced magnetic hysteresis loops up to 14 K are observed, and the effective energy barrier (Ueff = 1025 K) for relaxation of magnetization reached a breakthrough among the SMMs.
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Cites
Dispersion and Absorption in Dielectrics I. Alternating Current Characteristics
Cole, K. S., & Cole, R. H. (1941) · The Journal of Chemical Physics · doi:10.1063/1.1750906 · Cited by 10,152
Cited by
Single-Molecule Magnets: From Mn12-ac to dysprosium metallocenes, a travel in time
Zabala-Lekuona, A., Seco, J. M., & Colacio, E. (2021) · Coordination Chemistry Reviews · doi:10.1016/j.ccr.2021.213984 · Cited by 459
Uncertainty estimates for magnetic relaxation times and magnetic relaxation parameters
Reta, D., & Chilton, N. F. (2019) · Physical Chemistry Chemical Physics · doi:10.1039/c9cp04301b · Cited by 361
Nielsen, V. R. M., & Just Sørensen, T. (2025) · Nature Communications · doi:10.1038/s41467-025-66054-7 · Cited by 5
Metadata
- Authors
- Liu, J., Chen, Y.-C., Liu, J.-L., Vieru, V., Ungur, L., Jia, J.-H., Chibotaru, L. F., Lan, Y., Wernsdorfer, W., Gao, S., Chen, X.-M., & Tong, M.-L.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2016-04-19
- Volume
- 138
- Issue
- 16
- Pages
- 5441-5450
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2332200090
- Cited by
- 1,069
- References
- 1
- FWCI
- 52.22
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: A Stable Pentagonal Bipyramidal Dy(III) Single-Ion Magnet with a Record Magnetization Reversal Barrier over 1000 K. https://app.cochat.ai/papers/10.1021/jacs.6b02638
- The paper
- Liu, J., Chen, Y.-C., Liu, J.-L., Vieru, V., Ungur, L., Jia, J.-H., Chibotaru, L. F., Lan, Y., Wernsdorfer, W., Gao, S., Chen, X.-M., & Tong, M.-L. (2016). A Stable Pentagonal Bipyramidal Dy(III) Single-Ion Magnet with a Record Magnetization Reversal Barrier over 1000 K. Journal of the American Chemical Society. https://doi.org/10.1021/jacs.6b02638
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
