A method for treating a deposition reactor is disclosed. The receptacle and the at least one arm are configured to receive weights. Furthermore, the platform includes means for slidably mounting the first and second tray portions on the rail for sliding movement between first and second positions. The R1 group is larger than hydrogen and R2 is selected from the group consisting of: an alcohol, amides, a carboxylate, phosphinates and a phosphonate. The solvent in the reactant mixture acts as a transport medium to place the reactant gas on the wafer surface. Further provided are transformer cores produced utilizing the disclosed apparatus and manufacturing methods, as well as finished transformers which include such transformer cores.