Related resources
Full-text held externally
Search for item elsewhere
University researcher(s)
Academic department(s)
Magnetisation of isolated single crystalline Fe-nanoparticles measured by a ballistic Hall micro-magnetometer
Kuhn, L T; Geim, A K; Lok, J G S; Hedegard, P; Ylanen, K; Jensen, J B; Johnson, E; Lindelof, P E
European Physical Journal D. 2000;10(2):259-263.
Access to files
Full-text and supplementary files are not available from Manchester eScholar. Full-text is available externally using the following links:
Full-text held externally
Abstract
We present here the first magnetisation measurements on isolated single crystalline Fe-nanoparticles performed with a ballistic Hall micro-magnetometer. The measurements have a sensitivity of 10(4) mu(B) and thus provide us the possibility to study the mechanisms of magnetisation reversal in a single nanoparticle. The magnetic properties of the nanoparticles are influenced by their crystal structure and shape, and the presence of an oxide surface layer. They exhibit curling of the magnetic moments, but also a novel hysteresis behaviour. The spin configurations found for the system agree well with numerical calculations based on a Heisenberg Hamiltonian including the exchange and dipole interaction and surface anisotropy.
Keyword(s)
Bibliographic metadata
- Related website <Go to ISI>://000087440700011
- 321DU Times Cited:17 Cited References Count:18