Change search
ReferencesLink to record
Permanent link

Direct link
Size-Dependent Passivation Shell and Magnetic Properties in Antiferromagnetic/Ferrimagnetic Core/Shell MnO Nanoparticles
Campus Universitat Autnoma de Barcelona.
S:t Petersburg University.
Show others and affiliations
2010 (English)In: Journal of the American Chemical Society, ISSN 0002-7863, E-ISSN 1520-5126, Vol. 132, no 27, 9398-9407 p.Article in journal (Refereed) Published
Abstract [en]

The magnetic properties of bimagnetic core/shell nanoparticles consisting of an antiferromagnetic MnO core and a ferrimagnetic passivation shell have been investigated. It is found that the phase of the passivation shell (gamma-Mn2O3 or Mn3O4) depends on the size of the nanoparticles. Structural and magnetic characterizations concur that while the smallest nanoparticles have a predominantly gamma-Mn2O3 shell, larger ones have increasing amounts of Mn3O4. A considerable enhancement of the Neel temperature, T-N, and the magnetic anisotropy of the MnO core for decreasing core sizes has been observed. The size reduction also leads to other phenomena such as persistent magnetic moment in MnO up to high temperatures and an unusual temperature behavior of the magnetic domains.

Place, publisher, year, edition, pages
2010. Vol. 132, no 27, 9398-9407 p.
National Category
Other Basic Medicine
Research subject
Materials Chemistry
URN: urn:nbn:se:su:diva-41704DOI: 10.1021/ja1021798ISI: 000279745700039OAI: diva2:332368
Available from: 2010-08-04 Created: 2010-08-04 Last updated: 2010-10-05Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Salazar-Alvarez, German
By organisation
Department of Materials and Environmental Chemistry (MMK)
In the same journal
Journal of the American Chemical Society
Other Basic Medicine

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 31 hits
ReferencesLink to record
Permanent link

Direct link