RT journal article
T1 Correlation between magnetic spin structure and the three-dimensional geometry in chemically synthesized nanoscale magnetite rings
A1 Eltschka, M
A1 Kläui, M
A1 Rüdiger, U
A1 Kasama, Takeshi
A1 Cervera Gontard, Lionel
A1 Dunin-Borkowski, Rafal E
A1 Luo, F
A1 Heyderman, L J
A1 Jia, C -J
A1 Sun, L -D
A1 Yan, C -H
A2 Física de la Materia Condensada
AB The correlation between magnetic spin structure and geometry in nanoscale chemically synthesized Fe3O4 rings has been investigated by transmission electron microscopy. We find primarily the flux closure vortex states but in rings with thickness variations, an effective stray field occurs. Using tomography, we determine the complete three-dimensional geometries of thicker rings. A direct correlation between the geometry and the magnetization which points out of plane in the thickest parts of the ring yielding an intermediate magnetic state between the vortex state and the tube state is found. The interaction between exchange coupled rings leads to antiparallel vortex states and extended onion states.
PB AIP
YR 2008
FD 2008
LK http://hdl.handle.net/10498/35019
UL http://hdl.handle.net/10498/35019
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 21-sep-2026