A new iron oxyselenide Ce2O2FeSe2: synthesis and characterisation

In this communication we report the synthesis, structural and preliminary physical characterisation of a new layered oxyselenide Ce2O2FeSe2. This material, containing a 1D portion of the structure of the layered FeSe-related superconductors, is a semiconductor with a band gap of around 0.64 eV and orders antiferromagnetically at low temperatures.