Title :
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
fDate :
9/1/1997 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
