Effect of intermediate Layer at recording Layer/soft magnetic underlayer interface in perpendicular recording media observed by ferromagnetic Hall effect

Author

Das, Sarbanoo ; Kong, Sok-Hyun ; Nakagawa, Shigeki

Author_Institution

Dept. of Phys. Electron., Tokyo Inst. of Technol., Japan

Volume

40

Issue

4

fYear

2004

fDate

7/1/2004 12:00:00 AM

Firstpage

2464

Lastpage

2466

Abstract

Effect of the presence of a Pt intermediate layer (IL) between a 50-nm-thick CoCrPt recording layer (RL) and a 100-nm-thick NiFe soft magnetic under layer (SUL) has been studied using ferromagnetic Hall effect under the tilted magnetic field. CoCrPt RL with/without Pt IL between the RL and SUL revealed different inclination in the anomalous Hall voltage loop indicating the effect from the Ni-Fe SUL. Magnetic properties of the SUL, simultaneously detected from the Planar Hall voltage suggested the interaction effect between the CoCrPt RL and Ni-Fe SUL.

Keywords

Hall effect; cobalt alloys; interface magnetism; magnetic fields; nickel alloys; perpendicular magnetic recording; soft magnetic materials; 100 nm; 50 nm; CoCrPt-NiFe; Pt intermediate layer; anomalous Hall voltage loop; double-layered media; ferromagnetic Hall effect; interaction effect; magnetic interaction; magnetic properties; perpendicular recording media; planar Hall voltage; recording layer; soft magnetic underlayer interface; tilted magnetic field; Hall effect; Magnetic anisotropy; Magnetic field measurement; Magnetic films; Magnetic properties; Magnetization; Perpendicular magnetic anisotropy; Perpendicular magnetic recording; Soft magnetic materials; Voltage; Anomalous Hall effect; double-layered media; ferromagnetic Hall effect; intermediate layer; magnetic interaction;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2004.829278

Filename

1325539