Ontology type: schema:ScholarlyArticle Open Access: True
2015-07-01
AUTHORSThomas Pugh, Floriana Tuna, Liviu Ungur, David Collison, Eric J.L. McInnes, Liviu F. Chibotaru, Richard A. Layfield
ABSTRACTSingle-molecule magnets are a type of coordination compound that can retain magnetic information at low temperatures. Single-molecule magnets based on lanthanides have accounted for many important advances, including systems with very large energy barriers to reversal of the magnetization, and a di-terbium complex that displays magnetic hysteresis up to 14 K and shows strong coercivity. Ligand design is crucial for the development of new single-molecule magnets: organometallic chemistry presents possibilities for using unconventional ligands, particularly those with soft donor groups. Here we report dysprosium single-molecule magnets with neutral and anionic phosphorus donor ligands, and show that their properties change dramatically when varying the ligand from phosphine to phosphide to phosphinidene. A phosphide-ligated, trimetallic dysprosium single-molecule magnet relaxes via the second-excited Kramers' doublet, and, when doped into a diamagnetic matrix at the single-ion level, produces a large energy barrier of 256 cm−1 and magnetic hysteresis up to 4.4 K. More... »
PAGES7492
http://scigraph.springernature.com/pub.10.1038/ncomms8492
DOIhttp://dx.doi.org/10.1038/ncomms8492
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PUBMEDhttps://www.ncbi.nlm.nih.gov/pubmed/26130418
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