In this work, we have synthesized and studied structural and microstructural characteristics of LaBaCaCu3O7-delta-Ba2HoNbO6 composites Ba2HoNbO6 has an A(2)BB'O-6 complex cubic perovskite structure with lattice constant a = 8.439Angstrom. Ba2HoNbO6 is chemically and physically compatible with LaBaCaCu3O7-delta superconductor. So, we infer that Ba2HoNbO6 could be a potential substrate material for the fabrication of the LaBaCaCu3O7-delta superconducting films.