Magnetization configurations and hysteresis loops of small permalloy ellipses

DOI to cite this document:: 10.5283/epub.12771

Schneider, M. ; Liszkowski, J. ; Rahm, M. ; Wegscheider, Werner ; Weiss, Dieter

; Hoffmann, H. ; Zweck, J.

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Date of publication of this fulltext: 10 Feb 2010 11:18

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Abstract

We investigated systematically the easy axis magnetization reversal of 20 nm thick permalloy ellipses with a fixed major axis of 1.47 mum and minor axes of 0.22-1.47 mum. Lorentz transmission electron microscopy was used to image the micromagnetic configurations during magnetization reversal. Hysteresis loops of single ellipses were recorded by means of micro-Hall magnetometry and could be traced ...