We report on measurements of the second harmonics in the magnetovoltage generated in [Fe(12 Angstrom)/Cr(12 Angstrom)](10) epitaxial multilayers. It is shown that the variation of the amplitude of the second-harmonic signal with magnetic field is up to three times larger compared to the first harmonic. The enhanced "magnetovoltage" second-harmonic effect may be of practical use in systems based on spin electronic phenomena. (C) 1999 American Institute of Physics. [S0003-6951(99)03331-8].