Size-dependent magnetism of EuS nanoparticles.

EuS nanoparticles were synthesized by solution-phase thermolysis of the diethylammonium salt of the anionic europium dithiocarbamate complex, [Eu(S2CNEt2)4]-. Oleylamine and triphenylphosphine were used as surfactants to prevent nanoparticle agglomeration and stabilize particle growth. By varying the synthetic parameters such as reaction temperature, heating time, and the [surfactant]: [precursor] ratio, nanoparticles of different sizes were obtained. The size-dependent magnetic properties of these nanoparticles were studied, and it was observed that a decrease in the ferromagnetic ordering temperature occurs with decreasing particle size.

Main Author: Regulacio, Michelle.
Other Authors: Kar, Srotoswini., Zuniga, Edward., Wang, Guangbin., Dollahon, Norman., Yee, Gordon., Stoll, Sarah.
Language: English
Published: 2008
Online Access: