Berlin 2012 – scientific programme
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MA: Fachverband Magnetismus
MA 52: Poster II - Magnetic Heusler compounds, Magnetic shape memory alloys, Thin Films, Micro-/Nano-structured magnetic materials, Graphene, Spins in organics, Magnetic imaging, Surface Magnetism, Spin excitations/Torque, Spincaloric transport
MA 52.3: Poster
Friday, March 30, 2012, 11:00–14:00, Poster A
Magneto-optical characterization of single crystalline Co2FeAl0.4Si0.6 thin films on MgO substrates — •Ana Ruiz Calaforra1, Andres Conca1, Britta Leven1, Tanja Graf2,3, Frederick Casper2, Claudia Felser2,4, and Burkard Hillebrands1 — 1FB Physik and Landesforschungszentrum OPTIMAS, TU Kaiserslautern, 67663 Kaiserslautern, Germany — 2Institute of Inorganic and Analytical Chemistry, Johannes Gutenberg-University Mainz, 55099 Mainz, Germany — 3Graduate School of Excellence - Material Science in Mainz, 55099 Mainz, Germany — 4Max Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany
The full Heusler compound Co2FeAl0.4Si0.6 (CFAS) has been predicted to provide a 100% spin polarization with an enhanced temperature stability due to the fact that the Fermi level lies in the middle of the energy gap. Therefore, this material is a promising candidate for TMR- and GMR-devices. For this, the understanding of the magnetic properties of these compounds is of great importance. We present magneto-optical investigations on epitaxial thin CFAS films deposited on MgO (100) substrates with different seed layer materials. A magneto-optical Kerr effect setup with a rotational stage was used to study the magnetocrystalline anisotropy of the sample. An overall uniaxial anisotropy with a biaxial contribution strongly depending on the nature of the used seed layer was observed.
Support by the BMBF project MultiMag (VDI-TZ 13N9913) is acknowledged.