The authors report on the fabrication of room-temperature ferrimagnetic semiconductor thin films composed of 0.6FeTiO(3)center dot 0.4Fe(2)O(3) solid solution on alpha-Al2O3 (0001) substrates using a pulsed laser deposition method. A single ordered phase (R (3) over bar symmetry) is obtained under very limited deposition conditions including oxygen partial pressure of 2.0x10(-3) Pa and substrate temperature of 700 degrees C. The thin film with the ordered phase is an n-type semiconductor and ferrimagnetic with the Curie temperature > 400 K. The Hall effect measurements at room temperature suggest that the carrier spins are polarized. (c) 2006 American Institute of Physics.