Ultrasmall iron nanoparticles: Effect of size reduction on anisotropy and magnetization

L. M. Lacroix; S. Lachaize; A. Falqui; T. Blon; J. Carrey; M. Respaud; F. Dumestre; C. Amiens; O. Margeat; B. Chaudret; P. Lecante; E. Snoeck

doi:10.1063/1.2837625

Ultrasmall iron nanoparticles: Effect of size reduction on anisotropy and magnetization

L. M. Lacroix^*, S. Lachaize, A. Falqui, T. Blon, J. Carrey, M. Respaud, F. Dumestre, C. Amiens, O. Margeat, B. Chaudret, P. Lecante, E. Snoeck

^*Corresponding author for this work

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

60 Scopus citations

Abstract

Stable iron nanoparticles have been synthesised by the decomposition of {Fe (N [Si (C H3)3] 2)2 }2 under dihydrogen pressure. Those conditions lead to a system of monodisperse and metallic nanoparticles which diameter is less than 2 nm and stabilized by HN [Si (C H3)3] 2. The magnetization is found to be MS =1.92 μB at., i.e., 10% lower than the bulk value. The Mössbauer spectrum is fitted by two contributions of metallic iron. The magnetic anisotropy energy constant increases up to 5.2× 105 J m3, i.e., ten times the bulk one.

Original language	English (US)
Article number	07D521
Journal	Journal of Applied Physics
Volume	103
Issue number	7
DOIs	https://doi.org/10.1063/1.2837625
State	Published - 2008
Externally published	Yes

Bibliographical note

Funding Information:
L.M.L thanks the French Ministry “Enseignement Supérieur, Recherche” for her MNERT grant. The authors want to thank Région Midi-Pyrénnées and INSA Toulouse for their financial support.

ASJC Scopus subject areas

General Physics and Astronomy

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10.1063/1.2837625

Cite this

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title = "Ultrasmall iron nanoparticles: Effect of size reduction on anisotropy and magnetization",

abstract = "Stable iron nanoparticles have been synthesised by the decomposition of {Fe (N [Si (C H3)3] 2)2 }2 under dihydrogen pressure. Those conditions lead to a system of monodisperse and metallic nanoparticles which diameter is less than 2 nm and stabilized by HN [Si (C H3)3] 2. The magnetization is found to be MS =1.92 μB at., i.e., 10% lower than the bulk value. The M{\"o}ssbauer spectrum is fitted by two contributions of metallic iron. The magnetic anisotropy energy constant increases up to 5.2× 105 J m3, i.e., ten times the bulk one.",

author = "Lacroix, {L. M.} and S. Lachaize and A. Falqui and T. Blon and J. Carrey and M. Respaud and F. Dumestre and C. Amiens and O. Margeat and B. Chaudret and P. Lecante and E. Snoeck",

note = "Funding Information: L.M.L thanks the French Ministry “Enseignement Sup{\'e}rieur, Recherche” for her MNERT grant. The authors want to thank R{\'e}gion Midi-Pyr{\'e}nn{\'e}es and INSA Toulouse for their financial support.",

year = "2008",

doi = "10.1063/1.2837625",

language = "English (US)",

volume = "103",

journal = "Journal of Applied Physics",

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T2 - Effect of size reduction on anisotropy and magnetization

AU - Lacroix, L. M.

AU - Lachaize, S.

AU - Falqui, A.

AU - Blon, T.

AU - Carrey, J.

AU - Respaud, M.

AU - Dumestre, F.

AU - Amiens, C.

AU - Margeat, O.

AU - Chaudret, B.

AU - Lecante, P.

AU - Snoeck, E.

N1 - Funding Information: L.M.L thanks the French Ministry “Enseignement Supérieur, Recherche” for her MNERT grant. The authors want to thank Région Midi-Pyrénnées and INSA Toulouse for their financial support.

PY - 2008

Y1 - 2008

N2 - Stable iron nanoparticles have been synthesised by the decomposition of {Fe (N [Si (C H3)3] 2)2 }2 under dihydrogen pressure. Those conditions lead to a system of monodisperse and metallic nanoparticles which diameter is less than 2 nm and stabilized by HN [Si (C H3)3] 2. The magnetization is found to be MS =1.92 μB at., i.e., 10% lower than the bulk value. The Mössbauer spectrum is fitted by two contributions of metallic iron. The magnetic anisotropy energy constant increases up to 5.2× 105 J m3, i.e., ten times the bulk one.

AB - Stable iron nanoparticles have been synthesised by the decomposition of {Fe (N [Si (C H3)3] 2)2 }2 under dihydrogen pressure. Those conditions lead to a system of monodisperse and metallic nanoparticles which diameter is less than 2 nm and stabilized by HN [Si (C H3)3] 2. The magnetization is found to be MS =1.92 μB at., i.e., 10% lower than the bulk value. The Mössbauer spectrum is fitted by two contributions of metallic iron. The magnetic anisotropy energy constant increases up to 5.2× 105 J m3, i.e., ten times the bulk one.

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DO - 10.1063/1.2837625

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Ultrasmall iron nanoparticles: Effect of size reduction on anisotropy and magnetization

Abstract

Bibliographical note

ASJC Scopus subject areas

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