Recording process and reproducing feasibility of transverse magnetic recording

The process and reproducibility of transverse magnetic recording are studie d by micromagnetic simulation using the Landau-Lifshitz-Gilbert equation an d compared with longitudinal recording. The magnetization process of the re cording medium by a conventional thin-film head is simulated for various an isotropic fields of media. It is confirmed that the transverse bit can be r ecorded by using a conventional head and medium at high-bit density. The ma gnetic-field component perpendicular to the medium is very important for ma gnetization reversal. In transverse recording, there is a disadvantage in t hat the field perpendicular to the medium along the bit direction is very s mall. The transverse recording bits can be detected by a magnetoresistive e lement with two sensing regions at each end that have opposing biases of di fferent signs. As the track width becomes narrow, the output for transverse bits becomes large relative to that for longitudinal bits. (C) 1999 Americ an Institute of Physics. [S0021-8979(99)09822-9].