Transition metal/rare-earth multilayers show some unusual magnetic properties and are potential candidates as magneto-optical recording media. In this paper, we study by means of a torque magnetometer, the magnetic behavior of [Co-xAngstrom/Tb-15Angstrom](10) multilayers prepared by molecular beam epitaxy. We are interested here in the rotational hysteresis energy as a function of both the temperature and the Co thickness. (C) 2003 Elsevier Science B.V. All rights reserved.