Dresden 2011 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 63: Poster II (Surface Magnetism/ Magnetic Imaging/ Topological Insulators/ Spin Structures and Magnetic Phase Transitions/ Graphene/ Magnetic Thin Films/ Magnetic Semiconductors/ Magnetic Half-metals and Oxides/ Spin-dependent Transport/ Spin Excitations and Spin Torque/ Spin Injection and Spin Currents in Heterostructures/ Spintronics/ Magnetic Storage and Applications)

MA 63.26: Poster

Freitag, 18. März 2011, 11:00–14:00, P2

Micromagnetic investigation of domain walls in NdCo₅ thin films — •Marietta Seifert, Ludwig Schultz, and Volker Neu — IFW Dresden, Helmholtzstr. 20, 01069 Dresden, Germany

NdCo₅ is a highly anisotropic magnetic material in which a spin reorientation takes place from a magnetic easy c-axis above a temperature of 310 K via an easy cone to a magnetic easy plane in the basal plane of the hexagonal crystal at temperatures below 255 K. This transition was experimentally investigated in thin epitaxial NdCo₅ films grown on Cr buffered MgO (110) substrates [1]. For a further understanding of the domain processes during this transition, micromagnetic simulations have been performed to elucidate the spin structure within the domain walls in all three regimes of magnetic anisotropy. In addition the evolution of the domain structure while cooling down through the spin reorientation transition was simulated by a sequence of micromagnetic simulations with varying anisotropy constants.

[1] M. Seifert, L. Schultz, V. Neu, JAP 106, 073915 (2009)