Abstract

Molecular nanomagnets include metal complexes that show single-ion magnet, single-molecule magnet, or single-chain magnet behavior. In these compounds, slow magnetic relaxation is often observed at much higher temperatures than seen in 3D analogues due to the strong spin-orbit coupling of f-elements and the effects of the crystal field symmetry. This chapter will provide a concise introduction to the field of f-based molecular nanomagnets, and discuss key aspects regarding the relaxation property and the relaxation mechanisms operating in these systems. We overview the most significant properties and magnetic phenomena associated with slow-relaxing molecular nanomagnets, and discuss selected examples of single-ion, single-molecule, and single-chain magnets.

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