Materials belonging to the A2BWO6 and A2BVO6 families have shown interesting electrical and magnetic properties that may be applied to spintronics and fuel cell cathodes. The main motivation of this thesis is to synthesize and characterize materials with double perovskite type structure, especially the materials Sr2−xLaxNiWO6 (0 ≤ x ≤ 0, 15), Sr2FeWO6, Sr2CoWO6, LaFe0,5V0,5O3 y LaCo0,5V0,5O3, in order to evaluate its structural, morphological and magnetic properties. These materials were synthesized by means of the assisted gel combustion method, an unexplored synthesis method for this type of materials, which showed advantages over con-ventional synthesis methods such as the solid-state reaction method. The structural characteri-zations of the materials were carried out through X-ray diffraction (DRX), in some cases taking synchrotron data and implementing Rietveld refinements to the obtained diffraction patterns. The materials Sr2NiWO6 and Sr2CoWO6 crystallized in a tetragonal structure with a space group I4/m, while the material Sr2FeWO6 crystallized in a monoclinic structure with a space group P 21/n. The materials LaCo0.5V0.5O3 and LaFe0.5V0.5O3 crystallized into orthorhombic structures with space groups P nma and P nm, respectively. The morphological properties were determined through the Scanning Electron Microscopy technique (SEM), obtaining several mi-crographs, which allowed to determine average grain sizes in the range of ≈ 80 nm −270 nm for samples with granular structure. Magnetic susceptibility curves as a function of temperature and magnetization as a function of the external magnetic field applied were used to determine the magnetic properties. It was found that the antiferromagnetic response was characteristic for every material under study. However for the materials Sr2−xLaxNiWO6 and LaFe0.5V0.5O3, small ferromagnetic contributions were observed, while for the material LaCo0.5V0.5O3, a ferri-magnetic behavior is presented to temperatures below 150 K. Additionally, for the materials Sr2−xLaxNiWO6 Exchange Bias is presented, possibly associated with the Ni and W ions inter-actions that occur in the structure with different valences, as a result of the inclusion of trivalent ions of lanthanum. Thus, these results motivate research on this type of materials in order to determine their potential application as fuel cell cathodes and spintronic devices.