DPG Phi
Verhandlungen
Verhandlungen
DPG

Dresden 2006 – scientific programme

Parts | Days | Selection | Search | Downloads | Help

MA: Magnetismus

MA 20: Poster: Films(1-36) Transp(37-56) Ex.Bias(57-67) Spindyn(68-80) Micromag(81-95) Particle(96-109) Imag.+Surface(110-113) Spinelectr(114-122) Theory+Micromag(123-131) Spinstr+Aniso(132-142) MagMat(143-156) Meas(157,158) MolMag+Kondo(159-162) Postdead(163-)

MA 20.138: Poster

Tuesday, March 28, 2006, 15:15–19:15, P1

Spin-structure investigations by electron holography — •D. Backes1,2, L.J. Heyderman1, C. David1, F. Nolting3, M. Kläui2, M. Laufenberg2, H. Ehrke2,4, D. Bedau2, U. Rüdiger2, C.A.F. Vaz5, J.A.C. Bland5, T. Kasama4, R.E. Dunin-Borkowski4, S. Cherifi6, A. Locatelli6, and S. Heun61Laboratory for Micro- and Nanotechnology, Paul Scherrer Institut, Switzerland — 2FB Physik, Universität Konstanz — 3Swiss Light Source, Paul Scherrer Institut, Switzerland — 4Department of Materials Science and Metallurgy, University of Cambridge, UK — 5Cavendish Laboratory, University of Cambridge, UK — 6Sincrotrone Trieste, Basovizza, Italy

Domain walls of ferromagnetic curved-line elements exhibit two spin-configurations - the vortex and the transverse wall type. Systematical experimental studies have shown that the type depends on the geometry. We report on the fabrication of these curved-line elements on membranes which are essential to investigate them with electron holography. This measurement technique is able to visualize the magnetic induction in the elements and the magnetic stray fields outside of the elements. This allows us to study the interaction between domain walls which leads to interaction-induced transitions between the domain wall types. Small geometrical constrictions down to 30 nm have a large influence on the spin-structure of the domain walls [1]. With a resolution below 5 nm the spin-structure near and in the constrictions can be observed. Correlating this with magnetoresistance measurements reveals information about the interaction of spin-polarized charge carriers and domain walls.

[1] M. Kläui et al., Phys. Rev. Lett. 90, 97202 (2003)

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2006 > Dresden