We are interested in developing the nanoscale synthesis of ferromagnetic materials with tunable optical properties. We have targeted Eu2CuS3 as it is a mixed-valent, ferromagnetic, semiconductor. This work investigates the colloidal synthesis using the single-source precursor, Eu(Et2NCS2)3(phen), to synthesize Eu2CuS3 nanorods. This synthetic approach produces the first ever report of Eu2CuS3 material at the nanoscale, in a fraction of the time and less harsh synthetic conditions than for solid state reactions. These materials take on a unique morphology, namely homogeneous rods with a length up to a 0.5μm long and a width less than 50nm, based on transmission electron microscopy. The magnetic properties and the interesting mixed-valency and unique coordination environment of the two different europium metals will be discussed.

Synthesis and characterization of mixed-valent europium semiconductor nanorods

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