Perovskite-type oxides have been the subjects of extensive investigations because of their wide variety of physical properties such as piezoelectricity and ferroelectricity. Barium titanate doped with Ca and Zr (BCZT) [1] can be considered a pseudo cubic perovskite-type oxide (PDF card # 31-0174). This compound was prepared by using a modified Pechini method [2]. Rietveld refinements (Fig. 1-a) for the X-ray diffraction results suggest that the material crystallize in the tetragonal symmetry for the sample obtained at 700 oC for 1 h. Fig. 1-b and 1-c show TEM bright field micrograph for the powders heated at 700 oC and the corresponding histogram to determine the particle size distribution center at approximately 30 nm. This work shows the structural, chemical and the local piezoelectric characterization for BCZT nanoparticles by X-ray diffraction (XRD), UV-Vis spectroscopy, low loss region (0 - 40 eV) electron energy spectroscopy (EELS) based on scanning transmission electron microscopy (STEM) and piezo-response force microscopy (PFM).