Kamali, Saeed ; Pouryazdan, Mohsen ; Ghafari, Mohammad ; Itou, Masayoshi ; Rahman, Masoud ; Stroeve, Pieter ; Hahn, Horst ; Sakurai, Yoshiharu (2016)
Magnetization and stability study of a cobalt-ferrite-based ferrofluid.
In: Journal of Magnetism and Magnetic Materials, 404
doi: 10.1016/j.jmmm.2015.12.007
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
In this study the structural and magnetization properties of a CoFe2O4-based ferrofluid was investigated using x-ray diffraction (XRD), transmission electron microscopy (TEM), energy dispersive x-ray spectroscopy (EDS), Mossbauer spectroscopy, and magnetic Compton scattering (MCS) measurements. The XRD diagram indicates that the nanoparticles in the ferrofluid are inverse spinel and TEM graph shows that the ferrofluid consists of spherical nanoparticles with an average diameter of 18 +/- 1 nm, in good agreement with the size, 19.4 nm, extracted from line broadening of the XRD peaks. According to EDS measurements the composition of the nanoparticles is CoFe2O4. Mossbauer spectroscopy shows that the cation distributions are (Co0.38Fe0.62)[Co0.62Fe1.38]O-4. The MCS measurement, performed at 10 K, indicates that the magnetization of the nanoparticles is similar to magnetization of maghemite and magnetite. While the magnetization of the inverse spinels are in [111] direction, interestingly, the magnetization deduced from MCS is in [100] direction. The CoFe2O4-based ferrofluid is found to be stable at ambient conditions, which is important for applications. (C) 2015 Elsevier B.V. All rights reserved.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2016 |
| Autor(en): | Kamali, Saeed ; Pouryazdan, Mohsen ; Ghafari, Mohammad ; Itou, Masayoshi ; Rahman, Masoud ; Stroeve, Pieter ; Hahn, Horst ; Sakurai, Yoshiharu |
| Art des Eintrags: | Bibliographie |
| Titel: | Magnetization and stability study of a cobalt-ferrite-based ferrofluid |
| Sprache: | Englisch |
| Publikationsjahr: | 15 April 2016 |
| Verlag: | Elsevier Science BV, Netherlands |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Magnetism and Magnetic Materials |
| Jahrgang/Volume einer Zeitschrift: | 404 |
| DOI: | 10.1016/j.jmmm.2015.12.007 |
| Kurzbeschreibung (Abstract): | In this study the structural and magnetization properties of a CoFe2O4-based ferrofluid was investigated using x-ray diffraction (XRD), transmission electron microscopy (TEM), energy dispersive x-ray spectroscopy (EDS), Mossbauer spectroscopy, and magnetic Compton scattering (MCS) measurements. The XRD diagram indicates that the nanoparticles in the ferrofluid are inverse spinel and TEM graph shows that the ferrofluid consists of spherical nanoparticles with an average diameter of 18 +/- 1 nm, in good agreement with the size, 19.4 nm, extracted from line broadening of the XRD peaks. According to EDS measurements the composition of the nanoparticles is CoFe2O4. Mossbauer spectroscopy shows that the cation distributions are (Co0.38Fe0.62)[Co0.62Fe1.38]O-4. The MCS measurement, performed at 10 K, indicates that the magnetization of the nanoparticles is similar to magnetization of maghemite and magnetite. While the magnetization of the inverse spinels are in [111] direction, interestingly, the magnetization deduced from MCS is in [100] direction. The CoFe2O4-based ferrofluid is found to be stable at ambient conditions, which is important for applications. (C) 2015 Elsevier B.V. All rights reserved. |
| Freie Schlagworte: | Ferrofluid, Cobalt-ferrite, Nanoparticles, Mossbauer spectroscopy, Magnetic Compton scattering, Nano-magnetism |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Gemeinschaftslabor Nanomaterialien 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 26 Jul 2017 12:21 |
| Letzte Änderung: | 26 Jul 2017 12:21 |
| PPN: | |
| Sponsoren: | Saeed Kamali acknowledges Japan Society for the Promotion of Science for financial support. |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum