An optimal composition ofLa0.67Cd0.33MnO3was synthesized by ceramic route. The compound crystallized in a rhombohedral structure with lattice parametersa=5.473(4) Åand&agr;=60°37′.Resistivity measurement showed an insulator-to-metal transition coupled with a ferromagnetic transition of around 255 K. Epitaxial thin films were fabricated on theLaAlO3(100) substrate by a pulsed laser deposition technique. The psuedocubic lattice parameteraof the film is 3.873(4) Å. The insulator-to-metal transition of the film was observed at 250 K which is comparable with the bulk value. The film was ferromagnetic below this temperature. Magnetoresistance defined as&Dgr;R/R0=(RH−R0)/R0was over−86&percent;near the insulator-to-metal transition temperature of 240 K at 6 T magnetic field and over-30&percent; at relatively low fields of 1 T. No magnetoresistance was observed at low temperatures in the film unlike in the polycrystalline sample, where about a 40&percent; decrease in resistance was observed on applying 6 T magnetic field due to the spin dependent scattering at the grain boundaries. ©1997 American Institute of Physics.