Dresden 2009 – scientific programme
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MA: Fachverband Magnetismus
MA 13: Poster Ia: Electron Theory (1); Magnetic Imaging (2,3); Thin Films (4-25); MSMA (26-33); Magn. Semiconductors (34-42); Magn. Half Metals and Oxides (43-60)
MA 13.10: Poster
Tuesday, March 24, 2009, 10:15–13:00, P1A
crystallographic structure and magnetic properties of electrodeposited Co- rich Co-Pt films — •manvendra khatri1,2, heike schlörb1, ludwig schultz1,2, and sebastian fähler1,2 — 1IFW Dresden, Institute for Metallic Materials, P.O. Box 27 00 16, D-01171 Dresden, Germany — 2Institute for Solid State Physics, Department of Physics, Dresden University of Technology, 01062 Dresden, Germany
Co- rich Co-Pt alloy films have been grown by electrodeposition on Au seed layers. The influence of deposition current density on chemical composition, structure, microstructure and magnetic properties of the films has been investigated. Due to the superposition of the fcc Co-Pt (111) and hcp Co-Pt (002) planes the information supplied by XRD in conventional Bragg Brentano geometry was of limited value. Hence detailed texture measurements have been performed in order to understand the dependence of magnetic properties on phase composition and texture perfection. By comparing the integrated intensity ratio of fcc (200) to hcp (002) and fcc (111) reflections taken from pole figure measurements, it is possible to estimate the formation of hcp phase in the films with respect to current density. The integrated intensity ratio decreases with current density, which indicates the increase in the (002) texture of hcp in the film. The presence of (002) pole of hcp at higher current density indicates the textured growth of the film with c-axis out of plane. The decrease in the integrated intensity ratio is accompanied by an improvement of the out-of plane magnetic properties.