Design and modelling of dual spin-valve heads

Author

Pan, G. ; Huo, S. ; Mapps, D.J. ; Clegg, W.W.

Author_Institution

Sch. of Electron. Commun. & Electr. Eng., Plymouth Univ., UK

Volume

35

Issue

5

fYear

1999

fDate

9/1/1999 12:00:00 AM

Firstpage

2556

Lastpage

2558

Abstract

Two types of dual spin-valve head structure, the anti-parallel and parallel dual spin-valve heads, were proposed. Both dual spin-valve heads are thermal noise immune due to differential voltage sensing. The transfer functions of the two dual structures were analysed and transfer curves of shielded heads were simulated using a 3-D finite element method. Results have shown that the anti-parallel dual spin-valve head exhibits greater linear dynamic range than a single spin-valve head and almost doubled output of a single spin-valve head. It also has an ideal transfer curve passing through the origin independent of the bias state of single spin-valves

Keywords

finite element analysis; magnetic heads; spin valves; transfer functions; 3D FEM simulation; anti-parallel structure; design; differential voltage sensing; dual spin-valve heads; linear dynamic range; modelling; parallel structure; shielded heads; thermal noise immune; transfer curves; transfer functions; Analytical models; Anisotropic magnetoresistance; Giant magnetoresistance; Magnetic heads; Magnetic noise; Magnetic properties; Magnetization; Transfer functions; Valves; Voltage;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.800889

Filename

800889