Heteroepitaxial CrO2/TiO2 bilayers have been grown on the c-plane, the m-plane, the r-plane and the a-plane Al2O3 substrates by a combined method of pulsed laser deposition and chemical vapor deposition, and their structural and magnetic properties have been studied. The (200) CrO2 films on the c-plane showed the best out-of-plane crystallinity but a 60 degrees twin growth within the plane. On the other hand, the (002) CrO2 on the m-plane and the (101) CrO2 on the r-plane and the a-plane displayed a relatively good in-plane texture. The magnetic property depending on the crystal orientation has been observed by the measurements of magnetic hysteresis loop and magnetoresistance at room temperature. (C) 2009 Elsevier B.V. All rights reserved.