Title :
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
fDate :
7/1/1998 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
