论文信息 - Noise characteristics in exchange-biased soft underlayers for perpendicular media

Noise characteristics in exchange-biased soft underlayers for perpendicular media

The characteristics of exchange-biased soft underlayers (SULs) were investigated using magnetic force microscopy and spin stand measurements with a single-pole (focused ion-beam trimmed gap) writer and magnetoresistive head. The SUL high-moment materials (FeCoB, FeAlN) were exchange biased by using IrMn. Spin stand data on perpendicular media (CoCrPtB) with an exchange-biased FeCoB SUL also showed a low integrated dc erase noise level, demonstrating its potential for use in double-layered perpendicular media.

[1] A. Kikukawa,et al. Noise characteristics of double-layered perpendicular media using novel soft magnetic underlayer materials , 2000 .

[2] A. Kikukawa,et al. Effect of soft magnetic underlayer on magnetization microstructure of perpendicular thin film media , 2000 .

[3] T. Ando,et al. Triple Layer Perpendicular Recording Media For High SN Ratio And Signal Stability , 1997, 1997 IEEE International Magnetics Conference (INTERMAG'97).

[4] O. Kitakami,et al. Noise from underlayer of perpendicular magnetic recording medium , 1985 .

[5] K. Ouchi,et al. A Design of Soft Magnetic Backlayer for Double-Layered Perpendicular Magnetic Recording Medium , 1999 .

[6] N. Honda,et al. Correspondence of Medium Noise and Recording Characteristics to M-H Loop in Perpendicular Recording Media , 1997 .

[7] K. Ouchi,et al. Perpendicular Magnetic Recording Media , 1987, IEEE Translation Journal on Magnetics in Japan.