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Correlating materia...
Correlating material-specific layers and magnetic distributions within onion-like Fe3O4/MnO/gamma-Mn2O3 core/shell nanoparticles
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Krycka, K. L. (author)
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Borchers, J. A. (author)
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Laver, M. (author)
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- Salazar Alvarez, German (author)
- Stockholms universitet,Avdelningen för materialkemi
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Lopez-Ortega, A. (author)
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- Estrader, M. (author)
- Stockholms universitet,Avdelningen för materialkemi
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Surinach, S. (author)
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Baro, M. D. (author)
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Sort, J. (author)
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Nogues, J. (author)
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(creator_code:org_t)
- AIP Publishing, 2013
- 2013
- English.
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In: Journal of Applied Physics. - : AIP Publishing. - 0021-8979 .- 1089-7550. ; 113:17, s. 17B531-
- Related links:
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http://diposit.ub.ed...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- The magnetic responses of two nanoparticle systems comprised of Fe3O4/gamma-Mn2O3 (soft ferrimagnetic, FM/hard FM) and Fe3O4/MnO/gamma-Mn2O3 (soft FM/antiferromagnetic, AFM/hard FM) are compared, where the MnO serves to physically decouple the FM layers. Variation in the temperature and applied field allows for Small Angle Neutron Scattering (SANS) measurements of the magnetic moments both parallel and perpendicular to an applied field. Data for the bilayer particle indicate that the graded ferrimagnetic layers are coupled and respond to the field as a single unit. For the trilayer nanoparticles, magnetometry suggests a Curie temperature (T-C) approximate to 40 K for the outer gamma-Mn2O3 component, yet SANS reveals an increase in the magnetization associated with outer layer that is perpendicular to the applied field above T-C during magnetic reversal. This result suggests that the gamma-Mn2O3 magnetically reorients relative to the applied field as the temperature is increased above 40 K.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Krycka, K. L.
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Borchers, J. A.
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Laver, M.
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Salazar Alvarez, ...
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Lopez-Ortega, A.
-
Estrader, M.
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show more...
-
Surinach, S.
-
Baro, M. D.
-
Sort, J.
-
Nogues, J.
-
show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
- Articles in the publication
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Journal of Appli ...
- By the university
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Stockholm University