Thermal Magnetic Hysteresis in a Copper–Gadolinium–Radical Chain Compound

Abstract

Magnetic bistability spanning over a temperature domain of 40 K can result from a small structural deformation of the gadolinium aminoxyl coordination. This is illustrated for a nitronyl nitroxide 3d-4f chain, [Ln(hfac)3Cu(hfac)2(NIT-Pyrim)2] (Ln(III) = Gd, Dy), which is the first example of a bistable lanthanide-based complex.