Europium(III) chromate is a chemical compound composed of europium, chromium and oxygen with europium in the +3 oxidation state, chromium in the +5 oxidation state and oxygen in the âÂÂ2 oxidation state. It has the chemical formula of .
Europium(III) chromate crystallizes tetragonally with space group I4<sub>1</sub>/amd (No. 141) with lattice parameters a = 722.134(1) and c = 632.896(1) pm with four formula units per unit cell.
The Néel temperature of europium(III) chromate is . Above 700 ðC, europium(III) chromate begins to decompose into europium chromite ().
To obtain europium(III) chromate, an equimolar solution of europium(III) acetate and chromium(IV) oxide is dried in a vacuum at 70 ðC and then heated to 400 ðC in air. Another way to obtain europium(III) chromate is by reacting stoichiometric amounts of europium(III) nitrate hexahydrate and chromium(III) nitrate nonahydrate for 30 minutes at , 30 minutes at and then 1 hour at . A constant stream of oxygen is passed over the reaction mixture. An oxygen flow is used to stabilise the +5 oxidation state of chromium.