Size-dependent magnetism of EuS nanoparticles

被引：54

作者：

Regulacio, Michelle D. ^{[1
]}

Kar, Srotoswini ^{[1
]}

Zuniga, Edward ^{[1
]}

Wang, Guangbin ^{[1
]}

Dollahon, Norman R. ^{[1
]}

Yee, Gordon T. ^{[1
]}

Stoll, Sarah L. ^{[1
]}

机构：

[1] Georgetown Univ, Dept Chem, Washington, DC 20057 USA

来源：

CHEMISTRY OF MATERIALS | 2008年 / 20卷 / 10期

关键词：

D O I：

10.1021/cm703463s

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：3368 / 3376

页数：9

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