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Air-stable redox-active nanomagnets with lanthanide spins radical-bridged by a metal–metal bond

Author

Listed:
  • Fupin Liu

    (Leibniz Institute for Solid State and Materials Research (IFW Dresden))

  • Georgios Velkos

    (Leibniz Institute for Solid State and Materials Research (IFW Dresden))

  • Denis S. Krylov

    (Leibniz Institute for Solid State and Materials Research (IFW Dresden))

  • Lukas Spree

    (Leibniz Institute for Solid State and Materials Research (IFW Dresden))

  • Michal Zalibera

    (Slovak University of Technology)

  • Rajyavardhan Ray

    (Leibniz Institute for Solid State and Materials Research (IFW Dresden)
    Dresden Center for Computational Materials Science (DCMS), TU Dresden)

  • Nataliya A. Samoylova

    (Leibniz Institute for Solid State and Materials Research (IFW Dresden))

  • Chia-Hsiang Chen

    (Leibniz Institute for Solid State and Materials Research (IFW Dresden))

  • Marco Rosenkranz

    (Leibniz Institute for Solid State and Materials Research (IFW Dresden))

  • Sandra Schiemenz

    (Leibniz Institute for Solid State and Materials Research (IFW Dresden))

  • Frank Ziegs

    (Leibniz Institute for Solid State and Materials Research (IFW Dresden))

  • Konstantin Nenkov

    (Leibniz Institute for Solid State and Materials Research (IFW Dresden))

  • Aram Kostanyan

    (Physik-Institut der Universität Zürich)

  • Thomas Greber

    (Physik-Institut der Universität Zürich)

  • Anja U. B. Wolter

    (Leibniz Institute for Solid State and Materials Research (IFW Dresden))

  • Manuel Richter

    (Leibniz Institute for Solid State and Materials Research (IFW Dresden)
    Dresden Center for Computational Materials Science (DCMS), TU Dresden)

  • Bernd Büchner

    (Leibniz Institute for Solid State and Materials Research (IFW Dresden))

  • Stanislav M. Avdoshenko

    (Leibniz Institute for Solid State and Materials Research (IFW Dresden))

  • Alexey A. Popov

    (Leibniz Institute for Solid State and Materials Research (IFW Dresden))

Abstract

Engineering intramolecular exchange interactions between magnetic metal atoms is a ubiquitous strategy for designing molecular magnets. For lanthanides, the localized nature of 4f electrons usually results in weak exchange coupling. Mediating magnetic interactions between lanthanide ions via radical bridges is a fruitful strategy towards stronger coupling. In this work we explore the limiting case when the role of a radical bridge is played by a single unpaired electron. We synthesize an array of air-stable Ln2@C80(CH2Ph) dimetallofullerenes (Ln2 = Y2, Gd2, Tb2, Dy2, Ho2, Er2, TbY, TbGd) featuring a covalent lanthanide-lanthanide bond. The lanthanide spins are glued together by very strong exchange interactions between 4f moments and a single electron residing on the metal–metal bonding orbital. Tb2@C80(CH2Ph) shows a gigantic coercivity of 8.2 Tesla at 5 K and a high 100-s blocking temperature of magnetization of 25.2 K. The Ln-Ln bonding orbital in Ln2@C80(CH2Ph) is redox active, enabling electrochemical tuning of the magnetism.

Suggested Citation

  • Fupin Liu & Georgios Velkos & Denis S. Krylov & Lukas Spree & Michal Zalibera & Rajyavardhan Ray & Nataliya A. Samoylova & Chia-Hsiang Chen & Marco Rosenkranz & Sandra Schiemenz & Frank Ziegs & Konsta, 2019. "Air-stable redox-active nanomagnets with lanthanide spins radical-bridged by a metal–metal bond," Nature Communications, Nature, vol. 10(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-08513-6
    DOI: 10.1038/s41467-019-08513-6
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    Cited by:

    1. Yingjing Yan & Laura Abella & Rong Sun & Yu-Hui Fang & Yannick Roselló & Yi Shen & Meihe Jin & Antonio Rodríguez-Fortea & Coen Graaf & Qingyu Meng & Yang-Rong Yao & Luis Echegoyen & Bing-Wu Wang & Son, 2023. "Actinide-lanthanide single electron metal-metal bond formed in mixed-valence di-metallofullerenes," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

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