Vertical AMR sensor with new magnetic stabilizing design

Author

Takada, Akio ; Honda, Tadayuki ; Abe, Moriaki ; Kanno, Yoshihiro ; Shibata, Takuji ; Soda, Yutaka

Author_Institution

Magnetic Storage Dept., Sony Magnetic Products Inc., Miyagi, Japan

Volume

33

Issue

5

fYear

1997

fDate

9/1/1997 12:00:00 AM

Firstpage

2932

Lastpage

2934

Abstract

We have developed a new vertical anisotropic magnetoresistive (AMR) sensor for narrow track recording. In this design, the lower NiFe layer is deposited on the hard magnetic film. A large exchange coupling occurs between these films. The upper NiFe layer is magnetostatically coupled with the lower NiFe film. As a result, a stable operation is achieved even with a narrow 1 μm track width sensor. This head exhibits excellent recording characteristics

Keywords

exchange interactions (electron); iron alloys; magnetic heads; magnetic sensors; magnetoresistive devices; nickel alloys; soft magnetic materials; NiFe; anisotropic magnetoresistive sensor; exchange coupling; magnetic heads; magnetic stabilizing design; magnetostatic coupling; narrow track recording; recording characteristics; soft magnetic films; stable operation; vertical AMR sensor; Anisotropic magnetoresistance; Couplings; Magnetic anisotropy; Magnetic films; Magnetic heads; Magnetic sensors; Magnetostatics; Perpendicular magnetic anisotropy; Perpendicular magnetic recording; Sensor phenomena and characterization;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.617802

Filename

617802