Soft Magnetic FeNi-X (X=CuO, NiO, and CoO) Exchange Coupled Nanocomposites Prepared via Ball Milling

Author

Mishra, S.R. ; Dubenko, I. ; Khan, M. ; Young, T. ; Ganegoda, H. ; Ali, N. ; Marasinghe, G.

Author_Institution

Univ. of Memphis, Memphis

fYear

2006

fDate

8-12 May 2006

Firstpage

851

Lastpage

851

Abstract

Exchange coupled magnetic nanocomposite powders were obtained by mechanically milling ferromagnetic (FM)-antiferromagnetic (AFM) powders. A shift in the field cooled (FC) hysteresis loop and the coercivity (H_c) enhancement of the FM phase resulting from exchange bias anisotropy was observed. A model based on Preisach hysteresis model was used to calculate the interfacial energy between FM and AFM particles. The calculated interfacial energies were in good agreement with those reported for polycrystalline AFM thin films.

Keywords

ball milling; cobalt compounds; copper compounds; iron alloys; magnetic particles; nanocomposites; nickel alloys; nickel compounds; soft magnetic materials; FeNi-CoO; FeNi-CuO; FeNi-NiO; Preisach hysteresis model; ball milling; coercivity enhancement; exchange bias anisotropy; exchange coupled nanocomposites; ferromagnetic-antiferromagnetic powders; hysteresis loop; interfacial energy; magnetic nanocomposite powders; mechanical milling; soft magnetic nanocomposites; Anisotropic magnetoresistance; Ball milling; Coercive force; Couplings; Magnetic anisotropy; Magnetic hysteresis; Nanocomposites; Perpendicular magnetic anisotropy; Powders; Soft magnetic materials;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2006. INTERMAG 2006. IEEE International

Conference_Location

San Diego, CA

Print_ISBN

1-4244-1479-2

Type

conf

DOI

10.1109/INTMAG.2006.374882

Filename

4262284