Performance characteristics of a 4-terminal vertical magnetoresistive/inductive head

Author

Shibata, Takuji ; Saito, Norio ; Narisawa, Hiroaki ; Soda, Yutaka ; Sekiya, Tetsuo

Author_Institution

Sendai Technol. Center, Sony Corp., Miyagi, Japan

Volume

30

Issue

6

fYear

1994

fDate

11/1/1994 12:00:00 AM

Firstpage

3843

Lastpage

3845

Abstract

A 4-terminal vertical magnetoresistive (MR)/inductive head using the current bias technique has been developed. In the new head, a bias current conductor is connected to the rear lead of the MR element in series. With this design, this type of MR/inductive head can have a second harmonic distortion (SHD) of less than -25 dB with a 6 to 16 mA sense current. The linear recording density at D₅₀ is about 3.15 kfr/mm. The effective track width of the MR sensor is almost the same as its optical track width (2.5 μm), so high track density (TPI) is possible. The stability of an MR element with a 2 μm track width was also investigated

Keywords

harmonic distortion; magnetic heads; magnetoresistive devices; 2 micron; 4-terminal head; 6 to 16 mA; MR element; bias current conductor; current bias technique; performance characteristics; second harmonic distortion; vertical magnetoresistive/inductive head; Conductors; Lead; Magnetic films; Magnetic heads; Magnetoresistance; Optical distortion; Optical films; Optical recording; Optical sensors; Stability;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.333919

Filename

333919