Synthesis of magnetic CoPt/SiO2 nano-composite by pulsed laser ablation

Takafumi Seto; Kenji Koga; Fumiyoshi Takano; Hiroyuki Akinaga; Takaaki Orii; Makoto Hirasawa; Mitsuhiro Murayama

doi:10.1016/j.jphotochem.2006.04.046

Synthesis of magnetic CoPt/SiO₂ nano-composite by pulsed laser ablation

Takafumi Seto, Kenji Koga, Fumiyoshi Takano, Hiroyuki Akinaga, Takaaki Orii, Makoto Hirasawa, Mitsuhiro Murayama

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

5 Citations (Scopus)

Abstract

Core-shell nanoparticles composed of ferromagnetic cobalt platinum cores covered by non-magnetic silica shells were synthesized by laser ablation of a composite target in a helium background gas. The average diameter of the CoPt core was controlled by adjusting the CoPt/SiO₂ ratio of the ablation target and size-classifying the nanoparticles by an electrical mobility classifier. The present method successfully synthesized nearly monodispersed nanoparticles with an average core diameter as small as 2 nm. The size-dependent magnetic properties of nano-composite films generated by the deposition of nanoparticles onto the substrate were investigated by a SQUID magnetometer.

Original language	English
Pages (from-to)	342-345
Number of pages	4
Journal	Journal of Photochemistry and Photobiology A: Chemistry
Volume	182
Issue number	3
DOIs	https://doi.org/10.1016/j.jphotochem.2006.04.046
Publication status	Published - Sept 10 2006
Externally published	Yes

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)
Physics and Astronomy(all)

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10.1016/j.jphotochem.2006.04.046

Cite this

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title = "Synthesis of magnetic CoPt/SiO2 nano-composite by pulsed laser ablation",

abstract = "Core-shell nanoparticles composed of ferromagnetic cobalt platinum cores covered by non-magnetic silica shells were synthesized by laser ablation of a composite target in a helium background gas. The average diameter of the CoPt core was controlled by adjusting the CoPt/SiO2 ratio of the ablation target and size-classifying the nanoparticles by an electrical mobility classifier. The present method successfully synthesized nearly monodispersed nanoparticles with an average core diameter as small as 2 nm. The size-dependent magnetic properties of nano-composite films generated by the deposition of nanoparticles onto the substrate were investigated by a SQUID magnetometer.",

author = "Takafumi Seto and Kenji Koga and Fumiyoshi Takano and Hiroyuki Akinaga and Takaaki Orii and Makoto Hirasawa and Mitsuhiro Murayama",

note = "Funding Information: This study was supported in part by the New Energy and Industrial Technology Development Organization (NEDO) under the Nanotechnology Materials Program. ",

year = "2006",

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doi = "10.1016/j.jphotochem.2006.04.046",

language = "English",

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pages = "342--345",

journal = "Journal of Photochemistry and Photobiology A: Chemistry",

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TY - JOUR

T1 - Synthesis of magnetic CoPt/SiO2 nano-composite by pulsed laser ablation

AU - Seto, Takafumi

AU - Koga, Kenji

AU - Takano, Fumiyoshi

AU - Akinaga, Hiroyuki

AU - Orii, Takaaki

AU - Hirasawa, Makoto

AU - Murayama, Mitsuhiro

N1 - Funding Information: This study was supported in part by the New Energy and Industrial Technology Development Organization (NEDO) under the Nanotechnology Materials Program.

PY - 2006/9/10

Y1 - 2006/9/10

N2 - Core-shell nanoparticles composed of ferromagnetic cobalt platinum cores covered by non-magnetic silica shells were synthesized by laser ablation of a composite target in a helium background gas. The average diameter of the CoPt core was controlled by adjusting the CoPt/SiO2 ratio of the ablation target and size-classifying the nanoparticles by an electrical mobility classifier. The present method successfully synthesized nearly monodispersed nanoparticles with an average core diameter as small as 2 nm. The size-dependent magnetic properties of nano-composite films generated by the deposition of nanoparticles onto the substrate were investigated by a SQUID magnetometer.

AB - Core-shell nanoparticles composed of ferromagnetic cobalt platinum cores covered by non-magnetic silica shells were synthesized by laser ablation of a composite target in a helium background gas. The average diameter of the CoPt core was controlled by adjusting the CoPt/SiO2 ratio of the ablation target and size-classifying the nanoparticles by an electrical mobility classifier. The present method successfully synthesized nearly monodispersed nanoparticles with an average core diameter as small as 2 nm. The size-dependent magnetic properties of nano-composite films generated by the deposition of nanoparticles onto the substrate were investigated by a SQUID magnetometer.

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DO - 10.1016/j.jphotochem.2006.04.046

M3 - Article

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JO - Journal of Photochemistry and Photobiology A: Chemistry

JF - Journal of Photochemistry and Photobiology A: Chemistry

IS - 3

ER -

Synthesis of magnetic CoPt/SiO₂ nano-composite by pulsed laser ablation

Abstract

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