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A Cyclic {Ni$^{II}$$_8$Dy$^{III}$$_4$} Cluster Where the Dy$^{III}$ Moments Are Organized by the Transition Metal Spins

Year: 2026

Type: article

Abstract: A series of [Ni$_8$Ln$_4$(CO$_3$)$_4$(L)$_8$(NO$_3$)$_2$(H$_2$O)$_8$ (MeOH)$_4$](NO$_3$)$_2$ (Ln = Dy (1), Gd (2), Y (3)) cyclic coordination clusters containing four carbonate bridges were isolated and studied using SQUID and microSQUID experiments and quantum mechanical calculations. The dodecanuclear Ni$_8$Dy$_4$ complex exhibits slow relaxation of the magnetization confirmed by the presence of temperature- and field-dependent magnetic hysteresis loops. The competing interactions and the anisotropic nature within the cluster were analyzed using DFT and ab initio calculations and revealed that the spin structure of the DyIII ions is steered by the interactions mediated through the NiII ions.

Source: Repository KITopen (Karlsruhe Institute of Technology)

DOI: 10.5445/ir/1000196256

Authors: Dutta, Imon J., Mondal, Kartik Chandra, Braun, Jonas, Wernsdorfer, Wolfgang, Anson, Christopher E., Lan, Yanhua, Vignesh, Kuduva R., Powell, Annie K.

Language: English

Topic: Magnetism in coordination complexes

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funders: Department of Science and Technology, Ministry of Science and Technology, India, Deutscher Akademischer Austauschdienst, Deutsche Forschungsgemeinschaft, Indian Institute of Technology Bombay, Indian Institute of Science Education and Research Mohali, Science and Engineering Research Board

Awards: G376992779, G7003698739, G8760838735

OpenAlex ID: W7203651498

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