Recording process and reproducing feasibility of transverse magnetic recording

Abstract

The process and reproducibility of transverse magnetic recording are studied by micromagnetic simulation using the Landau–Lifshitz–Gilbert equation and compared with longitudinal recording. The magnetization process of the recording medium by a conventional thin-film head is simulated for various anisotropic fields of media. It is confirmed that the transverse bit can be recorded by using a conventional head and medium at high-bit density. The magnetic-field component perpendicular to the medium is very important for magnetization reversal. In transverse recording, there is a disadvantage in that the field perpendicular to the medium along the bit direction is very small. The transverse recording bits can be detected by a magnetoresistive element with two sensing regions at each end that have opposing biases of different signs. As the track width becomes narrow, the output for transverse bits becomes large relative to that for longitudinal bits.