Assembly and patterning of ferromagnetic nanoparticles from solution: a novel low-temperature liquid-phase annealing approach

T. Gang; Maarten Groen; S.S. Kinge; W.J.M. Naber; J.A. Boschker; Augustinus J.H.M. Rijnders; David Reinhoudt; Wilfred Gerard van der Wiel

doi:10.1016/j.synthmet.2010.12.012

Assembly and patterning of ferromagnetic nanoparticles from solution: a novel low-temperature liquid-phase annealing approach

T. Gang, Maarten Groen, S.S. Kinge, W.J.M. Naber, J.A. Boschker, Augustinus J.H.M. Rijnders, David Reinhoudt, Wilfred Gerard van der Wiel

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Abstract

Ferromagnetic L10-phase FePtAu nanoparticles (5–6 nm) were prepared using a low-temperature, liquid phase annealing approach. The chemically ordered, ferromagnetic L10-phase onset occurs for annealing temperatures as low as 150 ◦C. Large uniaxial magnetic anisotropy (Ku ∼107 erg/cm3) and a large longrange ordering parameter have been obtained. Significantly, the low-temperature liquid-phase annealing preserves the organic functionalization groups of the nanoparticles. Hence, these nanoparticles are flexible for further assembly and patterning. In addition, we present the assembly of FePt nanoparticles on ferromagnetic substrates with a thin alumina capping layer. This enables us to investigate spin dependent transport through the FePt nanoparticles by scanning tunneling microscopy.

Original language	Undefined
Pages (from-to)	586-590
Number of pages	5
Journal	Synthetic metals
Volume	161
Issue number	7-8
DOIs	https://doi.org/10.1016/j.synthmet.2010.12.012
Publication status	Published - Apr 2011

Keywords

EWI-21090
Scanning tunneling microscopy
Spintronics
IR-79197
Magnetic nanoparticles
FePtAu
METIS-280032
Solution annealing

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10.1016/j.synthmet.2010.12.012

http://eprints.eemcs.utwente.nl/secure2/21090/01/Assembly_and_patterning_of_ferromagnetic_nanoparticles_from_solution......pdf

Cite this

@article{75e0edb14a2843e6a3b7d809e36172ea,

title = "Assembly and patterning of ferromagnetic nanoparticles from solution: a novel low-temperature liquid-phase annealing approach",

abstract = "Ferromagnetic L10-phase FePtAu nanoparticles (5–6 nm) were prepared using a low-temperature, liquid phase annealing approach. The chemically ordered, ferromagnetic L10-phase onset occurs for annealing temperatures as low as 150 ◦C. Large uniaxial magnetic anisotropy (Ku ∼107 erg/cm3) and a large longrange ordering parameter have been obtained. Significantly, the low-temperature liquid-phase annealing preserves the organic functionalization groups of the nanoparticles. Hence, these nanoparticles are flexible for further assembly and patterning. In addition, we present the assembly of FePt nanoparticles on ferromagnetic substrates with a thin alumina capping layer. This enables us to investigate spin dependent transport through the FePt nanoparticles by scanning tunneling microscopy.",

keywords = "EWI-21090, Scanning tunneling microscopy, Spintronics, IR-79197, Magnetic nanoparticles, FePtAu, METIS-280032, Solution annealing",

author = "T. Gang and Maarten Groen and S.S. Kinge and W.J.M. Naber and J.A. Boschker and Rijnders, {Augustinus J.H.M.} and David Reinhoudt and {van der Wiel}, {Wilfred Gerard}",

year = "2011",

month = apr,

doi = "10.1016/j.synthmet.2010.12.012",

language = "Undefined",

volume = "161",

pages = "586--590",

journal = "Synthetic metals",

issn = "0379-6779",

publisher = "Elsevier B.V.",

number = "7-8",

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TY - JOUR

T1 - Assembly and patterning of ferromagnetic nanoparticles from solution: a novel low-temperature liquid-phase annealing approach

AU - Gang, T.

AU - Groen, Maarten

AU - Kinge, S.S.

AU - Naber, W.J.M.

AU - Boschker, J.A.

AU - Rijnders, Augustinus J.H.M.

AU - Reinhoudt, David

AU - van der Wiel, Wilfred Gerard

PY - 2011/4

Y1 - 2011/4

N2 - Ferromagnetic L10-phase FePtAu nanoparticles (5–6 nm) were prepared using a low-temperature, liquid phase annealing approach. The chemically ordered, ferromagnetic L10-phase onset occurs for annealing temperatures as low as 150 ◦C. Large uniaxial magnetic anisotropy (Ku ∼107 erg/cm3) and a large longrange ordering parameter have been obtained. Significantly, the low-temperature liquid-phase annealing preserves the organic functionalization groups of the nanoparticles. Hence, these nanoparticles are flexible for further assembly and patterning. In addition, we present the assembly of FePt nanoparticles on ferromagnetic substrates with a thin alumina capping layer. This enables us to investigate spin dependent transport through the FePt nanoparticles by scanning tunneling microscopy.

AB - Ferromagnetic L10-phase FePtAu nanoparticles (5–6 nm) were prepared using a low-temperature, liquid phase annealing approach. The chemically ordered, ferromagnetic L10-phase onset occurs for annealing temperatures as low as 150 ◦C. Large uniaxial magnetic anisotropy (Ku ∼107 erg/cm3) and a large longrange ordering parameter have been obtained. Significantly, the low-temperature liquid-phase annealing preserves the organic functionalization groups of the nanoparticles. Hence, these nanoparticles are flexible for further assembly and patterning. In addition, we present the assembly of FePt nanoparticles on ferromagnetic substrates with a thin alumina capping layer. This enables us to investigate spin dependent transport through the FePt nanoparticles by scanning tunneling microscopy.

KW - EWI-21090

KW - Scanning tunneling microscopy

KW - Spintronics

KW - IR-79197

KW - Magnetic nanoparticles

KW - FePtAu

KW - METIS-280032

KW - Solution annealing

U2 - 10.1016/j.synthmet.2010.12.012

DO - 10.1016/j.synthmet.2010.12.012

M3 - Article

SN - 0379-6779

VL - 161

SP - 586

EP - 590

JO - Synthetic metals

JF - Synthetic metals

IS - 7-8

ER -