Doubly exchange-biased FeMn/NiFe/Cu/NiFe/CrMnPt spin valves

Author

Lu, Zhengqi ; Lai, Wuyan ; Zheng, Yuankai

Author_Institution

Inst. of Phys., Acad. Sinica, Beijing, China

Volume

36

Issue

5

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

2899

Lastpage

2901

Abstract

Doubly exchange-biased FeMn/NiFe/Cu/NiFe/CrMnPt spin valves are prepared. By field annealing in magnetic fields of opposite directions, the magnetoresistive curve consists of two loops shifted in opposite directions from the zero magnetic field. Whether the NiFe layers are in the antiparallel state or in the parallel state in zero magnetic field can be adjusted by varying the exchange bias, By field annealing in magnetic fields of perpendicular directions, the total transverse bias field of the spin valve sensors is near zero field, Therefore, the modified spin valve can maximize the linear response region. It also shows potential for suppressing Barkhausen noise

Keywords

Barkhausen effect; annealing; chromium alloys; copper; exchange interactions (electron); iron alloys; magnetoresistance; manganese alloys; nickel alloys; platinum alloys; spin valves; Barkhausen noise; FeMn-NiFe-Cu-NiFe-CrMnPt; antiparallel state; doubly exchange-biased spin valves; field annealing; linear response region; magnetoresistive curve; parallel state; transverse bias field; zero magnetic field; Annealing; Antiferromagnetic materials; Couplings; Iron; Magnetic fields; Magnetic heads; Magnetic sensors; Magnetic separation; Perpendicular magnetic recording; Spin valves;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.908621

Filename

908621