Ultrahard magnetism from mixed-valence dilanthanide complexes with metal-metal bonding

Gould, Colin A.; McClain, K. Randall; Reta, Daniel; Kragskow, Jon G. C.; Marchiori, David A.; Lachman, Ella; Choi, Eun Sang; Analytis, James G.; Britt, R. David; Chilton, Nicholas F.; Harvey, Benjamin G.; Long, Jeffrey R.

doi:10.1126/science.abl5470

articleScienceJan 14, 2022Closed access

Ultrahard magnetism from mixed-valence dilanthanide complexes with metal-metal bonding

CAColin A. Gould KRK. Randall McClain DRDaniel Reta JGJon G. C. Kragskow DADavid A. Marchiori

University of California, Berkeley · Naval Air Warfare Center Weapons Division · +5 more institutions

PubMed

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Abstract

Magnetic effects of lanthanide bonding Lanthanide coordination compounds have attracted attention for their persistent magnetic properties near liquid nitrogen temperature, well above alternative molecular magnets. Gould et al . report that introducing metal-metal bonding can enhance coercivity. Reduction of iodide-bridged terbium or dysprosium dimers resulted in a single electron bond between the metals, which enforced alignment of the other valence electrons. The resultant coercive fields exceeded 14 tesla below 50 and 60 kelvin for the terbium and dysprosium compounds, respectively. —JSY

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Topics & keywords

Topics

Keywords

Dysprosium
Terbium
Metal
Valence (chemistry)
Materials science
Lanthanide
Magnetism
Coercivity

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