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

Author:

Gould Colin A.1ORCID,McClain K. Randall2ORCID,Reta Daniel3ORCID,Kragskow Jon G. C.3ORCID,Marchiori David A.4ORCID,Lachman Ella56ORCID,Choi Eun-Sang7ORCID,Analytis James G.56ORCID,Britt R. David4ORCID,Chilton Nicholas F.3ORCID,Harvey Benjamin G.2ORCID,Long Jeffrey R.168ORCID

Affiliation:

1. Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA.

2. US Navy, Naval Air Warfare Center, Weapons Division, Research Department, Chemistry Division, China Lake, CA 93555, USA.

3. Department of Chemistry, School of Natural Sciences, The University of Manchester, Manchester M13 9 PL, UK.

4. Department of Chemistry, University of California, Davis, Davis, CA 95616, USA.

5. Department of Physics, University of California, Berkeley, Berkeley, CA 94720, USA.

6. Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.

7. National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310, USA.

8. Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, CA 94720, USA.

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

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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