One-pot synthesis of core-shell FeRh nanoparticles

Diana Ciuculescu; Catherine Amiens; Marc Respaud; Andrea Falqui; Pierre Lecante; Robert E. Benfield; Linqin Jiang; Kai Fauth; Bruno Chaudret

doi:10.1021/cm0715343

One-pot synthesis of core-shell FeRh nanoparticles

Diana Ciuculescu, Catherine Amiens^*, Marc Respaud, Andrea Falqui, Pierre Lecante, Robert E. Benfield, Linqin Jiang, Kai Fauth, Bruno Chaudret

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

43 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	4624-4626
Number of pages	3
Journal	Chemistry of Materials
Volume	19
Issue number	19
DOIs	https://doi.org/10.1021/cm0715343
State	Published - Sep 18 2007
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Materials Chemistry

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title = "One-pot synthesis of core-shell FeRh nanoparticles",

abstract = "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.",

author = "Diana Ciuculescu and Catherine Amiens and Marc Respaud and Andrea Falqui and Pierre Lecante and Benfield, {Robert E.} and Linqin Jiang and Kai Fauth and Bruno Chaudret",

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doi = "10.1021/cm0715343",

language = "English (US)",

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T1 - One-pot synthesis of core-shell FeRh nanoparticles

AU - Ciuculescu, Diana

AU - Amiens, Catherine

AU - Respaud, Marc

AU - Falqui, Andrea

AU - Lecante, Pierre

AU - Benfield, Robert E.

AU - Jiang, Linqin

AU - Fauth, Kai

AU - Chaudret, Bruno

PY - 2007/9/18

Y1 - 2007/9/18

N2 - 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.

AB - 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.

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JO - Chemistry of Materials

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ER -

One-pot synthesis of core-shell FeRh nanoparticles

Abstract

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