I want to prepare single phase Ag3VO4 using solid state method. I tried to prepare this sample by mixing stoichiometric amounts of Ag2O and V2O5 followed by wet ball milling in ethanol for 12 hours followed by calcining at 4000 C for 5 hours. However I couldn't obtain single phase Ag3VO4 by following this method. So I skipped wet ball milling step and ground stoichiometric amounts of Ag2O and V2O5 in a mortar and pestle for 20 min and then calcining at 4000 C for 5 hours. I couldn't get single phase Ag3VO4 by following this method either. Anybody has prepared single phase Ag3VO4 ? Sample colour of my sample is orange. What is the colour of single phase Ag3VO4?