Title :
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
fDate :
9/1/1997 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
