Size-Dependent Magnetism of EuS Nanoparticles
Chemistry of Materials2008Vol. 20(10), pp. 3368–3376
Citations Over TimeTop 10% of 2008 papers
Michelle D. Regulacio, Srotoswini Kar, Edward Zúñiga, Guangbin Wang, Norman R. Dollahon, G.T. Yee, Sarah L. Stoll
Abstract
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.
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