Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | e764-e767 |
| Fachzeitschrift | Journal of Magnetism and Magnetic Materials |
| Jahrgang | 316 |
| Ausgabenummer | 2 SPEC. ISS. |
| Frühes Online-Datum | 13 März 2007 |
| Publikationsstatus | Veröffentlicht - Sept. 2007 |
Abstract
The magnetization enhancement in nanoscale mechanosynthesized MgFe2O4 is reported and is discussed in terms of a modified core-shell model, in which a competition between the effects of spin canting and site exchange of cations plays a decisive role. Because of the nearly random distribution of cations, the surface shell of nanoparticles exhibits an effective magnetic moment that is about 2 times larger than that of the particle core. The thickness of the "magnetically active" surface shell is calculated from the size-dependent magnetization measurements.
ASJC Scopus Sachgebiete
- Werkstoffwissenschaften (insg.)
- Elektronische, optische und magnetische Materialien
- Physik und Astronomie (insg.)
- Physik der kondensierten Materie
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in: Journal of Magnetism and Magnetic Materials, Jahrgang 316, Nr. 2 SPEC. ISS., 09.2007, S. e764-e767.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Magnetization enhancement in nanosized MgFe2O4 prepared by mechanosynthesis
AU - Šepelák, Vladimír
AU - Bergmann, Ingo
AU - Menzel, Dirk
AU - Feldhoff, Armin
AU - Heitjans, Paul
AU - Litterst, Fred J.
AU - Becker, Klaus Dieter
N1 - Funding Information: The work was supported by the Deutsche Forschungsgemeinschaft. Partial support by the Grant Agency of the Slovak Academy of Sciences (Grant 2/5146/25) and by the Alexander von Humboldt Foundation is acknowledged.
PY - 2007/9
Y1 - 2007/9
N2 - The magnetization enhancement in nanoscale mechanosynthesized MgFe2O4 is reported and is discussed in terms of a modified core-shell model, in which a competition between the effects of spin canting and site exchange of cations plays a decisive role. Because of the nearly random distribution of cations, the surface shell of nanoparticles exhibits an effective magnetic moment that is about 2 times larger than that of the particle core. The thickness of the "magnetically active" surface shell is calculated from the size-dependent magnetization measurements.
AB - The magnetization enhancement in nanoscale mechanosynthesized MgFe2O4 is reported and is discussed in terms of a modified core-shell model, in which a competition between the effects of spin canting and site exchange of cations plays a decisive role. Because of the nearly random distribution of cations, the surface shell of nanoparticles exhibits an effective magnetic moment that is about 2 times larger than that of the particle core. The thickness of the "magnetically active" surface shell is calculated from the size-dependent magnetization measurements.
KW - Cation disorder
KW - Ferrimagnet
KW - Fine particle
KW - Mechanosynthesis
KW - Spin canting
UR - http://www.scopus.com/inward/record.url?scp=34250357565&partnerID=8YFLogxK
U2 - 10.1016/j.jmmm.2007.03.087
DO - 10.1016/j.jmmm.2007.03.087
M3 - Article
AN - SCOPUS:34250357565
VL - 316
SP - e764-e767
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
SN - 0304-8853
IS - 2 SPEC. ISS.
ER -