Synthesis and magnetic properties of multifunctional CoPtAu nanoparticles

Ji Hyun Min; Jun Hua Wu; Ah Young Song; In Tak Jeon; Jae Seon Ju; Young Keun Kim

doi:10.1063/1.3072750

Synthesis and magnetic properties of multifunctional CoPtAu nanoparticles

Ji Hyun Min, Jun Hua Wu, Ah Young Song, In Tak Jeon, Jae Seon Ju, Young Keun Kim

Department of Materials Science and Engineering

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

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Abstract

We present the synthesis and magnetic properties of multifunctional CoPtAu alloy nanoparticles of three compositions, Co0.33 Pt0.33 Au0.33, Co0.2 Pt0.2 Au0.6, and Co0.4 Pt0.4 Au0.2, by a modified polyol process. The x-ray diffraction and transmission electron microscopy analyses confirm the formation of the alloy nanostructure comprising Au-rich and Pt-rich nanophases, with a narrow distribution of particle sizes and provides the detailed structural arrangements. The magnetic study shows the composition dependence of the magnetic properties of the nanoparticles, from superparamagnetic for both Co0.33 Pt0.33 Au0.33 and Co0.4 Pt0.4 Au0.2 to soft ferromagnetic for Co0.2 Pt0.2 Au0.6.

Original language	English
Article number	07B527
Journal	Journal of Applied Physics
Volume	105
Issue number	7
DOIs	https://doi.org/10.1063/1.3072750
Publication status	Published - 2009

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "Synthesis and magnetic properties of multifunctional CoPtAu nanoparticles",

abstract = "We present the synthesis and magnetic properties of multifunctional CoPtAu alloy nanoparticles of three compositions, Co0.33 Pt0.33 Au0.33, Co0.2 Pt0.2 Au0.6, and Co0.4 Pt0.4 Au0.2, by a modified polyol process. The x-ray diffraction and transmission electron microscopy analyses confirm the formation of the alloy nanostructure comprising Au-rich and Pt-rich nanophases, with a narrow distribution of particle sizes and provides the detailed structural arrangements. The magnetic study shows the composition dependence of the magnetic properties of the nanoparticles, from superparamagnetic for both Co0.33 Pt0.33 Au0.33 and Co0.4 Pt0.4 Au0.2 to soft ferromagnetic for Co0.2 Pt0.2 Au0.6.",

author = "Min, {Ji Hyun} and Wu, {Jun Hua} and Song, {Ah Young} and Jeon, {In Tak} and Ju, {Jae Seon} and Kim, {Young Keun}",

year = "2009",

doi = "10.1063/1.3072750",

language = "English",

volume = "105",

journal = "Journal of Applied Physics",

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T1 - Synthesis and magnetic properties of multifunctional CoPtAu nanoparticles

AU - Min, Ji Hyun

AU - Wu, Jun Hua

AU - Song, Ah Young

AU - Jeon, In Tak

AU - Ju, Jae Seon

AU - Kim, Young Keun

PY - 2009

Y1 - 2009

N2 - We present the synthesis and magnetic properties of multifunctional CoPtAu alloy nanoparticles of three compositions, Co0.33 Pt0.33 Au0.33, Co0.2 Pt0.2 Au0.6, and Co0.4 Pt0.4 Au0.2, by a modified polyol process. The x-ray diffraction and transmission electron microscopy analyses confirm the formation of the alloy nanostructure comprising Au-rich and Pt-rich nanophases, with a narrow distribution of particle sizes and provides the detailed structural arrangements. The magnetic study shows the composition dependence of the magnetic properties of the nanoparticles, from superparamagnetic for both Co0.33 Pt0.33 Au0.33 and Co0.4 Pt0.4 Au0.2 to soft ferromagnetic for Co0.2 Pt0.2 Au0.6.

AB - We present the synthesis and magnetic properties of multifunctional CoPtAu alloy nanoparticles of three compositions, Co0.33 Pt0.33 Au0.33, Co0.2 Pt0.2 Au0.6, and Co0.4 Pt0.4 Au0.2, by a modified polyol process. The x-ray diffraction and transmission electron microscopy analyses confirm the formation of the alloy nanostructure comprising Au-rich and Pt-rich nanophases, with a narrow distribution of particle sizes and provides the detailed structural arrangements. The magnetic study shows the composition dependence of the magnetic properties of the nanoparticles, from superparamagnetic for both Co0.33 Pt0.33 Au0.33 and Co0.4 Pt0.4 Au0.2 to soft ferromagnetic for Co0.2 Pt0.2 Au0.6.

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JF - Journal of Applied Physics

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Synthesis and magnetic properties of multifunctional CoPtAu nanoparticles

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