Synthesis and characterisation of the new oxyselenide Bi2YO4Cu2Se2Electronic supplementary information (ESI) available: fractional atomic coordinates from Rietveld refinement of Bi2Ln4O4Cu4Se2 phases. See http://www.rsc.org/suppdata/cc/b2/b200892k/

Abstract

In this communication we report the synthesis, structure and preliminary characterisation of Bi2LnO4Cu2Se2 (Ln = Y, Gd, Sm, Nd, La) phases; these materials are members of a new family of layered oxychalcogenides.