Overwrite, nonlinear transition shift of laminated antiferromagnetically coupled media

Summary form only given. Recently, laminated antiferromagnetically coupled (LAC) media are being considered as potential candidates to extend the life of longitudinal recording. In these structures, the reduction of M/sub r//spl delta/ is achieved by the cancellation of the recording layer´s moments from the thinner (bottom) layer´s moment. Therefore, these structures have a larger thermal stability, even at low M/sub r//spl delta/ values. Since the LAC media are considerably different from the conventional recording media due to the presence of antiferromagnetic coupling, it is expected that the recording physics in LAC media might be different too. Therefore, in this work, we have investigated the recording performance of LAC media with two and three magnetic layers using a spin-stand. Comparison is made with the recording performance of a conventional single layered media.