Hysteresis behavior of CoPt nanoparticles

Author

Huang, Y.H. ; Zhang, Ye ; Hadjipanayis, G.C. ; Weller, Dieter

Author_Institution

Dept. of Phys., Delaware Univ., Newark, DE, USA

fYear

2002

Abstract

Summary form only given. The authors investigate the structural and intrinsic magnetic properties of CoPt (FePt) nanoparticles with respect to the particle size and interaction between the particles. All the as-made films are magnetically soft. The films consist of the fcc CoPt phase with grain size less than 2 nm. After annealing the coercivity of the samples increases due to both an increase in particle size and the L1/sub 0/ atomic ordering of the particles.

Keywords

annealing; cobalt alloys; coercive force; crystal structure; ferromagnetic materials; grain size; magnetic hysteresis; magnetic particles; magnetic thin films; nanoparticles; particle size; platinum alloys; soft magnetic materials; 2 nm; C amorphous matrix; CoPt; CoPt nanoparticles; CoPt-C; FePt; FePt nanoparticles; FePt-C; L1/sub 0/ atomic ordering; annealing; coercivity; fcc phase; grain size; hysteresis behavior; intrinsic magnetic properties; particle interaction; particle size; randomly oriented single crystalline particles; soft magnetic films; Amorphous magnetic materials; Hysteresis; Magnetic anisotropy; Magnetic films; Magnetic properties; Nanocrystals; Nanoparticles; Perpendicular magnetic anisotropy; Physics; Saturation magnetization;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2002. INTERMAG Europe 2002. Digest of Technical Papers. 2002 IEEE International

Conference_Location

Amsterdam, The Netherlands

Print_ISBN

0-7803-7365-0

Type

conf

DOI

10.1109/INTMAG.2002.1001266

Filename

1001266