Dear Mostafa, the two most popular methods are: 1 - Prepare a viscous PVA solution and disperse the solid with an ultrasound and put in a Petri dish. Evaporate the water under moderate heating and vacuum to obtain films by wet casting. I said viscous because otherwise the solid will sediment. One alternative is to have the nanometric solid. 2 - Mix the components and put in an extruder and inject the samples or put in a hot press.
You could dissolve ilmenite FeTio3 in hydrocarbon solvent like Ethylene Glygol (EG, boilng point 190 oC) and could it be single solvent for ilmenite FeTio3 and polymer.