Regensburg 2010 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 24: Spinelectronics / Spin Injection in Heterostructures

MA 24.8: Vortrag

Donnerstag, 25. März 2010, 12:00–12:15, H22

Structural and transport properties of Permalloy nanowires — •Saleh Getlawi, Michael R Koblischka, and Uwe Hartmann — Institute of Experimental Physics, Saarland University, Campus C 6 3, D-66123 Saarbrücken, Germany

The study of the relationships between geometry and structure of magnetic nanowires on the one hand and their electron transport properties on the other hand is a growing research area of current importance. Permalloy nanostructres with contact pads of various designs (diamonds, ellipses, rectangles, squares) were prepared by electron-beam lithography and the lift-off process in order to find the optimally suited structure for measurements of the magnetoresisance and magnetoimpedance and simultaneous domain observation by means of magnetic force microscopy (MFM). Fur this purpose, all samples were equipped with four current/voltage electrodes made of Pt by employing a dual-beam focused-ion beam system. The obtained MFM images were compared to micromagnetic simulations.