We have recently developed chromium precursors for the synthesis of chalcogenide materials with novel magnetic and semiconducting properties. We have investigated the use of solution conditions, and precursors to control both composition and shape of nanostructured chromium chalcogenides. The first system we have explored is based on Cr<sub>2</sub>S<sub>3</sub>, a semiconductor with an Eg of 1.1 eV, and a ferrimagnetic transition temperature of 120K. We have also prepared nanoparticles with varying morphology of CuCrS2, which has a band gap of 2.48 eV, and is antiferromagnetic (Neel temperature of 40 K). Finally, we have turned to some ternary magnetic semiconductors based on the chromium chalcospinel structure type.

Synthesis of chromium magnetic semiconductors

249th National Meeting (2015)

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