Magnetic properties of NiFe films exchange-coupled with NiO

Author

Lin, Chien-Li ; Sivertsen, John M. ; Judy, Jack H.

Author_Institution

Center for Micromagnetics & Inf. Technol., Minnesota Univ., Minneapolis, MN, USA

Volume

31

Issue

6

fYear

1995

fDate

11/1/1995 12:00:00 AM

Firstpage

4091

Lastpage

4093

Abstract

The unidirectional anisotropies of NiFe Permalloy thin films exchange-coupled to nickel oxide films are analyzed. Studies were made on ferromagnetic-antiferromagnetic of NiFe/NiO bilayer structures as a function of layers thicknesses. For a 100 Å thick Ni₈₁Fe₁₉ film deposited on top of a 400 Å thick NiO film, an exchange anisotropy field (H_e) of 115 Oe is obtained at room temperature after field-cooled from 200°C. The equivalent interfacial exchange coupling energy is 0.09 ergs/cm²

Keywords

Permalloy; antiferromagnetic materials; exchange interactions (electron); ferromagnetic materials; magnetic anisotropy; nickel compounds; 100 A; 20 to 200 C; 400 A; NiFe-NiO; Permalloy thin films; ferromagnetic-antiferromagnetic bilayer structure; interfacial exchange coupling; layer thickness; unidirectional anisotropy; Anisotropic magnetoresistance; Antiferromagnetic materials; Helium; Magnetic field measurement; Magnetic films; Magnetic hysteresis; Magnetic materials; Magnetic properties; Optical films; Substrates;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.489871

Filename

489871