Sandwich-structural multilayer films Au/HoMnO3/YBa2Cu3O7-delta were prepared epitaxially on SrTiO3 (001) single crystal substrates by using pulsed laser deposition technique. The HoMnO3 films crystallized in a metastable orthorhombic structure and the Au and YBa2Cu3O7-delta were used as electrodes to dielectric and magnetodielectric properties of HoMnO3 films. The impedance and electric spectroscopic plots were used to discern the intrinsic characteristics of HoMnO3 films or unwanted effects. The low-temperature (-2 K) dependence of the dielectric constant of HoMnO3 films as frequency shows anomalies around 43 K and 22 K, which is corresponding to the Neel temperature and transition of Mn3(+) moments, respectively. The magnetodielectric effects of HoMnO3 films were 100 kHz under a 2T applied magnetic field, and the dielectric constant was tuned resulting in a decrease The results indicate the strong coupling between the dielectric properties and magnetic orthorhombic HoMnO3 films. (C) 2010 Elsevier B.V. All rights reserved