Sol-Gel derived PbTiO3films were prepared with a polar glass ceramic as the substrate. The crystallization was investigated by means of X-ray diffraction. A preferentialc-axis orientation in the film was observed. The grain size and the microstrain were determined by measuring the integrated width of the diffraction. The grain size increases with increasing firing temperature following an Arrhenius relation. The microstrain decreases with increasing firing temperature and it is much higher in the [001] direction than in the [100] direction.