Antiferromagnetic coupling in a macroscopic ferrimagnet EuS-Co

Author

Tang, Jinke ; Feng, Li ; O´Connor, Charles J. ; Li, Sichu

Author_Institution

Dept. of Phys., New Orleans Univ., LA, USA

Volume

33

Issue

5

fYear

1997

fDate

9/1/1997 12:00:00 AM

Firstpage

3739

Lastpage

3741

Abstract

Antiferromagnetic coupling between nanoparticles of EuS and Co matrix, both ferromagnetically ordered, has been observed in the mechanically alloyed nanocomposite (EuS)₃₀Co₇₀ below the Curie temperature of EuS. The coupling strength was found to increase with decreasing particle size of EuS. This was attributed to the increased presence of EuS in the proximity of the interface between EuS and Co that may strongly influence the short range exchange coupling

Keywords

Curie temperature; cobalt alloys; composite material interfaces; composite materials; europium alloys; exchange interactions (electron); ferrimagnetic materials; magnetic particles; mechanical alloying; nanostructured materials; particle size; (EuS)₃₀Co₇₀; Co matrix; Curie temperature; antiferromagnetic coupling; coupling strength; ferromagnetically ordered; interface; macroscopic ferrimagnet EuS-Co; mechanically alloyed nanocomposite; nanoparticles; particle size; short range exchange coupling; Antiferromagnetic materials; Couplings; Ferrimagnetic materials; Magnetic materials; Magnetic properties; Milling; Nanoparticles; Nanostructured materials; Powders; X-ray diffraction;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.619556

Filename

619556