In another embodiment, oxides or other oxygen containing compounds of said first element, said second element, {HEAD ~ cerium}, and terbium are dissolved in {TAIL ~ an acidic solution} to form the first solution, such as hydrochloric acid, nitric acid, sulfuric acid, citric acid, or acetic acid 
dissolved in
In another embodiment , oxides or other oxygen containing compounds of said first element , said second element , { HEAD ~ cerium } , and terbium are dissolved in { TAIL ~ an acidic solution } to form the first solution , such as hydrochloric acid , nitric acid , sulfuric acid , citric acid , or acetic acid
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH