Low NLTS approach: Perpendicular/Longitudinal composite media

Author

Yuan, Zhi-Min ; Liu, Bo ; Futamoto, Masaaki ; Hirayama, Yoshiyuki

Author_Institution

Data Storage Inst., Singapore

Volume

36

Issue

5

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

2381

Lastpage

2383

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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.908438

Filename

908438