This title appears in the Scientific Report :
2012
Please use the identifier:
http://dx.doi.org/10.1088/1367-2630/14/1/013025 in citations.
Please use the identifier: http://hdl.handle.net/2128/7412 in citations.
Quantitative spatial magnetization distribution in iron oxide nanocubes and nanospheres by polarized small-angle neutron scattering
Quantitative spatial magnetization distribution in iron oxide nanocubes and nanospheres by polarized small-angle neutron scattering
By means of polarized small-angle neutron scattering, we have resolved the long-standing challenge of determining the magnetization distribution in magnetic nanoparticles in absolute units. The reduced magnetization, localized in non-interacting nanoparticles, indicates strongly particle shape-depen...
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Personal Name(s): | Disch, S. |
---|---|
Wetterskog, E. / Hermann, R. / Wiedenmann, A. / Vainio, U. / Salazar-Alvarez, G. / Bergström, L. / Brückel, T. | |
Contributing Institute: |
Streumethoden; PGI-4 Streumethoden; JCNS-2 JARA-FIT; JARA-FIT |
Published in: | New journal of physics, 14 (2012) S. 013025 |
Imprint: |
[Bad Honnef]
Dt. Physikalische Ges.
2012
|
Physical Description: |
013025 |
DOI: |
10.1088/1367-2630/14/1/013025 |
Document Type: |
Journal Article |
Research Program: |
Großgeräte für die Forschung mit Photonen, Neutronen und Ionen (PNI) Grundlagen für zukünftige Informationstechnologien |
Series Title: |
New Journal of Physics
14 |
Subject (ZB): | |
Link: |
Get full text OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/7412 in citations.
By means of polarized small-angle neutron scattering, we have resolved the long-standing challenge of determining the magnetization distribution in magnetic nanoparticles in absolute units. The reduced magnetization, localized in non-interacting nanoparticles, indicates strongly particle shape-dependent surface spin canting with a 0.3(1) and 0.5(1) nm thick surface shell of reduced magnetization found for similar to 9 nm nanospheres and similar to 8.5 nm nanocubes, respectively. Further, the reduced macroscopic magnetization in nanoparticles results not only from surface spin canting, but also from drastically reduced magnetization inside the uniformly magnetized core as compared to the bulk material. Our microscopic results explain the low macroscopic magnetization commonly found in nanoparticles. |