{HEAD ~ A process} for preparing a nanocrystalline material comprising at least a first ion and at least a second ion different from the first ion, and wherein at least the first ion is {TAIL ~ a metal ion}, is described 
{ HEAD ~ A process } for preparing a nanocrystalline material comprising at least a first ion and at least a second ion different from the first ion , and wherein at least the first ion is { TAIL ~ a metal ion } , is described
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH