Title :
Low NLTS approach: Perpendicular/Longitudinal composite media
Author :
Yuan, Zhi-Min ; Liu, Bo ; Futamoto, Masaaki ; Hirayama, Yoshiyuki
Author_Institution :
Data Storage Inst., Singapore
fDate :
9/1/2000 12:00:00 AM
Abstract :
It is desirable to employ low NLTS media in high density magnetic recording. The perpendicular/longitudinal (P/L) composite media, consisting of a perpendicularly oriented top layer and a longitudinally oriented underlayer, tends to have lower NLTS value than the single layered perpendicular media due to the opposite shift direction of NLTS in the two recording layers. Experimental results show that the P/L composite media has a lower NLTS than a single layered perpendicular media, and its NLTS value is slightly less sensitive to flying height or switching speed variation when compared with single layered perpendicular media
Keywords :
chromium alloys; cobalt alloys; ferromagnetic materials; magnetic recording; perpendicular magnetic recording; platinum alloys; CoCr19Pt10-CoCr20Pt12; NLTS value sensitivity; P/L composite media; flying height; high density magnetic recording; longitudinally oriented underlayer; low NLTS approach; low NLTS media; nonlinear transition shift; perpendicular/longitudinal composite media; perpendicularly oriented top layer; single layered perpendicular media; switching speed variation; Coercive force; Error analysis; Fluctuations; Magnetic heads; Magnetic properties; Magnetic recording; Memory; Perpendicular magnetic recording; Testing; Writing;
Journal_Title :
Magnetics, IEEE Transactions on
