Preparation of double layered perpendicular recording media with extremely high resolution

Author

Ariake, J. ; Kiya, T. ; Honda, N. ; Ouchi, K. ; Adamik, M. ; Czigany, Z. ; Safran, G. ; Radnoczi, G.

Author_Institution

Akita Res. Inst. of Adv. Technol., Japan

Volume

37

Issue

4

fYear

2001

fDate

7/1/2001 12:00:00 AM

Firstpage

1573

Lastpage

1576

Abstract

In a double layered perpendicular magnetic recording medium, recording resolution and time decay of output signal have been studied. Introduction of a stacked intermediate layer (NiFeNb/Ti) between a soft magnetic back layer and a storage layer improves magnetic property of the storage layer. The stacked intermediate layer can reduce the initial growth layer of the storage layer by hetero-epitaxial growth. Time decay of output signal for a medium with the stacked intermediate layer was suppressed within -0.4 dB at 1000 seconds after recording at 100 kFRPI. A reproduced signal at an extremely high linear density of 950 kFRPI has been confirmed by a CF-SPT head for writing and a GMR head with track width of 0.4 micrometer for reading

Keywords

chromium alloys; cobalt alloys; ferromagnetic materials; iron alloys; magnetic heads; magnetic multilayers; magnetic recording noise; nickel alloys; niobium alloys; perpendicular magnetic recording; platinum alloys; soft magnetic materials; sputter deposition; 0.4 micron; CF-SPT head; CoCrNbPt-NiFeNb; GMR head; double layered perpendicular recording media; hetero-epitaxial growth; initial growth layer; linear density; output signal; recording resolution; reproduced signal; soft magnetic back layer; stacked intermediate layer; storage layer; time decay; track width; Force measurement; Magnetic domains; Magnetic films; Magnetic heads; Magnetic noise; Magnetic properties; Magnetic recording; Perpendicular magnetic recording; Signal resolution; Soft magnetic materials;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.950904

Filename

950904