Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 132, Issue 27, Pages 9398-9407Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja1021798
Keywords
-
Categories
Funding
- Spanish MICINN [MAT2007-66309-C02, CSD2006-00012]
- Catalan DGR [2009-SGR-1292]
- Institut Catala de Nanotecnologia
- European Union [FP7-PEOPLE-2009-IRSES-247518]
- Russian Foundation for Basic Researches [N07-02-00608, N10-02-00576]
- CONICET Argentina [PIP 5250/03]
- UNC [882/07]
- ICREA ACADEMIA
- ICREA Funding Source: Custom
Ask authors/readers for more resources
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available