Ultrasmall iron nanoparticles: Effect of size reduction on anisotropy and magnetization
Stable iron nanoparticles have been synthesised by the decomposition of {Fe(N[Si(CH3)3]2)2}2 under dihydrogen pressure. Those conditions lead to a system of monodisperse and metallic nanoparticles which diameter is less than 2nm and stabilized by HN[Si(CH3)3]2. The magnetization is found to be MS=1....
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| Veröffentlicht in: | Journal of applied physics 2008-04, Vol.103 (7) |
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| container_title | Journal of applied physics |
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| creator | Lacroix, L.-M. Lachaize, S. Falqui, A. Blon, T. Carrey, J. Respaud, M. Dumestre, F. Amiens, C. Margeat, O. Chaudret, B. Lecante, P. Snoeck, E. |
| description | Stable iron nanoparticles have been synthesised by the decomposition of {Fe(N[Si(CH3)3]2)2}2 under dihydrogen pressure. Those conditions lead to a system of monodisperse and metallic nanoparticles which diameter is less than 2nm and stabilized by HN[Si(CH3)3]2. The magnetization is found to be MS=1.92μB∕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 5.2×105J∕m3, i.e., ten times the bulk one. |
| doi_str_mv | 10.1063/1.2837625 |
| format | Article |
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Those conditions lead to a system of monodisperse and metallic nanoparticles which diameter is less than 2nm and stabilized by HN[Si(CH3)3]2. The magnetization is found to be MS=1.92μB∕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 5.2×105J∕m3, i.e., ten times the bulk one.</abstract><cop>United States</cop><pub>American Institute of Physics</pub><doi>10.1063/1.2837625</doi><orcidid>https://orcid.org/0000-0002-9088-1635</orcidid><orcidid>https://orcid.org/0000-0003-3351-7949</orcidid><orcidid>https://orcid.org/0000-0003-2361-6759</orcidid><orcidid>https://orcid.org/0000-0001-6337-6855</orcidid><orcidid>https://orcid.org/0000-0002-1177-4787</orcidid><orcidid>https://orcid.org/0000-0003-3716-2399</orcidid><orcidid>https://orcid.org/0000-0001-9290-6421</orcidid><orcidid>https://orcid.org/0000-0002-1735-0942</orcidid></addata></record> |
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| source | AIP Journals Complete; AIP Digital Archive; Alma/SFX Local Collection |
| subjects | ANISOTROPY COMMINUTION DECOMPOSITION DISPERSIONS FERROMAGNETIC MATERIALS IRON MAGNETIZATION MATERIALS SCIENCE MOESSBAUER EFFECT NANOSTRUCTURES PARTICLES |
| title | Ultrasmall iron nanoparticles: Effect of size reduction on anisotropy and magnetization |
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