Domain walls and magnetic properties of very thin permalloy films for magnetoresistive sensors

Author

Akhter, M.A. ; Mapps, D.J. ; Ma, Y.Q. ; Petford-Long, A.K. ; Doole, R.

Author_Institution

Plymouth Univ., UK

Volume

34

Issue

4

fYear

1998

fDate

7/1/1998 12:00:00 AM

Firstpage

1147

Lastpage

1149

Abstract

The magnetic properties (coercivity and magnetoresistance) of very thin permalloy films were studied for their use in magnetoresistive (MR) sensors. Permalloy films were deposited under different conditions and a comparison was made in their properties. Domain walls in these films were studied using a specially modified TEM. Barkhausen noise was studied by differentiating the M-H characteristic and its origin is discussed in the context of the magnetic domain wall structures

Keywords

Barkhausen effect; Permalloy; coercive force; ferromagnetic materials; magnetic domain walls; magnetic sensors; magnetic thin films; magnetoresistance; magnetoresistive devices; Barkhausen noise; TEM; coercivity; domain walls; magnetic properties; magnetoresistance); magnetoresistive sensors; very thin permalloy films; Anisotropic magnetoresistance; Coercive force; Magnetic domain walls; Magnetic films; Magnetic materials; Magnetic noise; Magnetic properties; Magnetic sensors; Sensor phenomena and characterization; Thin film sensors;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.706422

Filename

706422