Recording process and reproducing feasibility of transverse magnetic recording

Abstract

Articles you may be interested inHigh-frequency magnetic-force microscopy characterization of magnetic recording writer poles J. Appl. Phys. 97, 10N902 (2005); 10.1063/1.1852436Spin-stand imaging of transverse magnetization profiles of recorded tracks Resistance as a reliability indicator in lifetime testing of thin film magnetic recording headsThe 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.

Vector recording in perpendicular media

“…The faster reversal under the pole edge is explained by the lower coercivity and faster switching of the medium when the field is applied at an angle to the perpendicular. A similar effect has been observed in longitudinal media [7], [8].…”

Magnetic Data Storage: Past Present and Future

“…4). In the vast majority of systems, the magnetisation is oriented along the writing direction, and we speak about longitudinal recording as opposed to tranversal recording, which never became a commercial system (Atarashi and Shiiki, 1999;Misles et al, 1998;Desserre, 1985;Sauter et al, 1972). In this section we will discuss the different components of longitudinal recording systems, all the way from the recording medium, through heads, positioning systems, and data detection and coding.…”