One-pot synthesis of core - Shell FeRh nanoparticles

被引：37

作者：

Ciuculescu, Diana

Amiens, Catherine

Respaud, Marc

Falqui, Andrea

Lecante, Pierre

Benfield, Robert E.

Jiang, Linqin

Fauth, Kai

Chaudret, Bruno

机构：

[1] CNRS, Chim Coordinat Lab, UPR 8241, F-31077 Toulouse, France

[2] Inst Natl Sci Appl, Lab Phys & Chim Nanoobjets, F-31077 Toulouse, France

[3] CNRS, Ctr Elaborat Mat & Etud Struct, F-31055 Toulouse, France

[4] Univ Kent, Funct Mat Grp, Sch Phys Sci, Canterbury CT2 7NH, Kent, England

[5] Max Planck Inst Med Res, D-70569 Stuttgart, Germany

来源：

CHEMISTRY OF MATERIALS | 2007年 / 19卷 / 19期

关键词：

D O I：

10.1021/cm0715343

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：

The core shell Rh@Fe NPs was successfully synthesized by a one pot method, using the different kinetics of hydrogenation of organometallic precursors. Rh(allyl)39 and Fe[N(SiMe3)2] 210 was selected as metal precursors. These particles displayed enhanced magnetic moments in quantitative agreement with measurements on bare-gas particles that demonstrated that the production of hexamethyldisilazane in the hydrogenation step is the most sensitive physical parameters of the material. Repeated energy-dispersive X-ray (EDX) analysis showed the presence of isolated NPs containing both materials. The structures were investigated by wide-angle X-ray scattering (WAXS) measurements. The magnetic properties of final Rh20Fe80 NPs was carried out by SQUID and the zero field cooled magnetization curve measured at 1 mT is characteristic of a superparamagnetic behavior that displayed a very low blocking temperature.

引用

页码：4624 / 4626

页数：3

共 24 条

[1] SYNTHESIS OF BIS[BIS(TRIMETHYLSILYL)AMIDO]IRON(II) - STRUCTURE AND BONDING IN MN[N(SIME3)2]2, FE[N(SIME3)2]2, CO[N(SIME3)2]2 - 2-COORDINATE TRANSITION-METAL AMIDES [J].