The synthesis and the magnetic properties of two new bimetallic chromium-vanadium ferrimagnets, compounds 1 and 2, are reported. They belong to a set of nonstoichiometric Prussian blue analogues C I y V-[Cr III (CN) 6 ] z ‚nH 2 O (C, alkali cation) with T C varying between 295 and 315 K (T C ) 310 K for 1 and 315 K for 2). They are obtained through mild chemistry from the molecular precursor [Cr III (CN) 6 ] 3and from vanadium V II salts. The synthetic conditions determine (i) the oxidation state of the vanadium (V II , V III , or V IV ), (ii) the stoichiometry, and (iii) hence the magnetic properties. The reported systems present a larger magnetization than the first reported V-Cr analogue (0.36N A β for 1 and 0.40N A β for 2). Furthermore, X-ray magnetic circular dichroism (XMCD) data demonstrate (i) the short-range antiferromagnetic coupling between the spins borne by the chromium(III) and vanadium ions and (ii) the reversal of the local magnetization on vanadium and chromium when changing the stoichiometry.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.