Berlin 2008 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 41: Layer Deposition Processes

DS 41.2: Vortrag

Freitag, 29. Februar 2008, 14:45–15:00, H 2032

Magnetoelectrodeposition of CoFe — •Koza Jakub, Uhlemann Margitta, Gebert Annett, and Schultz Ludwig — IFW-Dresden, Dresden, Germany

The effect of a uniform magnetic field with flux density up to 1 T and different configuration on the electrodeposition of CoFe from simple sulphate electrolyte has been investigated. Voltammetric and chronoamperometric experiments have been carried out coupled with the electrochemical quartz crystal microbalance for the in situ mass measurements. The structure and morphology were determined by scanning electron microscopy, atomic force microscopy and X-ray diffraction measurements and the magnetic properties by VSM and MFM measurements. Results show that when the magnetic field is applied parallel to the electrode surface the limiting current density and deposition rate are increased due to the MHD-effect. The nucleation process is also affected in parallel configuration; this effect is attributed to hydrodynamic response of the electrochemical system. No significant influence on electrochemical reaction was observed when magnetic field was applied perpendicular to electrode. But in this configuration morphology and magnetic properties of deposited layers are changed by the magnetic field.