Ferromagnetic multipods fabricated by solution phase synthesis and hydrogen reduction

Y. C. Sui; Y. Zhao; J. Zhang; S. Jaswal; X. Z. Li; D. J. Sellmyer

doi:10.1109/TMAG.2007.894204

Ferromagnetic multipods fabricated by solution phase synthesis and hydrogen reduction

Y. C. Sui, Y. Zhao, J. Zhang, S. Jaswal, X. Z. Li, D. J. Sellmyer

Physics and Astronomy

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

2 Scopus citations

Abstract

A simple approach combining pyrolysis and hydrogen reduction is formulated for making ferromagnetic-branched nanostructures called Co multipods. The CoO multipods (branched nanostructures) were produced through the pyrolysis of cobalt-oleate in octadecane at 280°C with the presence of oleic acid under the protection of pure nitrogen. The angles between the nearest arms are 90°. After the reduction of the branched CoO nanostructures in flowing hydrogen gas in a tubular oven at 290°C, the CoO is reduced to pure cobalt with hexagonal crystal structure and the branched shapes are retained. Anisotropic magnetic properties were found for cobalt multipods on silicon substrates.

Original language	English (US)
Pages (from-to)	3115-3117
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	43
Issue number	6
DOIs	https://doi.org/10.1109/TMAG.2007.894204
State	Published - Jun 2007

Keywords

Chemical synthesis
Co multipods
Hydrogen reduction
Magnetically anisotropic

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/TMAG.2007.894204

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title = "Ferromagnetic multipods fabricated by solution phase synthesis and hydrogen reduction",

abstract = "A simple approach combining pyrolysis and hydrogen reduction is formulated for making ferromagnetic-branched nanostructures called Co multipods. The CoO multipods (branched nanostructures) were produced through the pyrolysis of cobalt-oleate in octadecane at 280°C with the presence of oleic acid under the protection of pure nitrogen. The angles between the nearest arms are 90°. After the reduction of the branched CoO nanostructures in flowing hydrogen gas in a tubular oven at 290°C, the CoO is reduced to pure cobalt with hexagonal crystal structure and the branched shapes are retained. Anisotropic magnetic properties were found for cobalt multipods on silicon substrates.",

keywords = "Chemical synthesis, Co multipods, Hydrogen reduction, Magnetically anisotropic",

author = "Sui, {Y. C.} and Y. Zhao and J. Zhang and S. Jaswal and Li, {X. Z.} and Sellmyer, {D. J.}",

note = "Funding Information: ACKNOWLEDGMENT This work is supported by the DOE, NSF-MRSEC, INSIC, NRI, and NCMN. The authors would like to thank B. Jones for his technical support.",

year = "2007",

month = jun,

doi = "10.1109/TMAG.2007.894204",

language = "English (US)",

volume = "43",

pages = "3115--3117",

journal = "IEEE Transactions on Magnetics",

issn = "0018-9464",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "6",

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TY - JOUR

T1 - Ferromagnetic multipods fabricated by solution phase synthesis and hydrogen reduction

AU - Sui, Y. C.

AU - Zhao, Y.

AU - Zhang, J.

AU - Jaswal, S.

AU - Li, X. Z.

AU - Sellmyer, D. J.

N1 - Funding Information: ACKNOWLEDGMENT This work is supported by the DOE, NSF-MRSEC, INSIC, NRI, and NCMN. The authors would like to thank B. Jones for his technical support.

PY - 2007/6

Y1 - 2007/6

N2 - A simple approach combining pyrolysis and hydrogen reduction is formulated for making ferromagnetic-branched nanostructures called Co multipods. The CoO multipods (branched nanostructures) were produced through the pyrolysis of cobalt-oleate in octadecane at 280°C with the presence of oleic acid under the protection of pure nitrogen. The angles between the nearest arms are 90°. After the reduction of the branched CoO nanostructures in flowing hydrogen gas in a tubular oven at 290°C, the CoO is reduced to pure cobalt with hexagonal crystal structure and the branched shapes are retained. Anisotropic magnetic properties were found for cobalt multipods on silicon substrates.

AB - A simple approach combining pyrolysis and hydrogen reduction is formulated for making ferromagnetic-branched nanostructures called Co multipods. The CoO multipods (branched nanostructures) were produced through the pyrolysis of cobalt-oleate in octadecane at 280°C with the presence of oleic acid under the protection of pure nitrogen. The angles between the nearest arms are 90°. After the reduction of the branched CoO nanostructures in flowing hydrogen gas in a tubular oven at 290°C, the CoO is reduced to pure cobalt with hexagonal crystal structure and the branched shapes are retained. Anisotropic magnetic properties were found for cobalt multipods on silicon substrates.

KW - Chemical synthesis

KW - Co multipods

KW - Hydrogen reduction

KW - Magnetically anisotropic

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JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

SN - 0018-9464

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Ferromagnetic multipods fabricated by solution phase synthesis and hydrogen reduction

Abstract

Keywords

ASJC Scopus subject areas

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