Berlin 2012 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 36: Magnetic Heusler Compounds II

MA 36.2: Topical Talk

Donnerstag, 29. März 2012, 10:00–10:30, H 1012

The role of Heusler alloys in various applications — •Andreas Hütten — Bielefeld Universität

As a consequence of the theoretically predictions of 100% spin polarized half- and full-Heusler compounds over the past decade, Heusler alloys are among the most promising materials class for future applications in magnetoelectronics. The resulting electronic structures as well as their magnetic properties will be used to identify potential areas of applications. Among these areas are magnetic logic, biosensors and granular GMR-sensors. Using Heusler alloyed magnetic electrodes in TMR biosensors will boost their performance in terms of an accessible external field range. This is accompanied by a different noise behavior which in turn can be used so as to characterize the performance of the Heusler alloyed magnetic electrodes. We will cover the development of highly sensitive Heusler TMR-sensors to optimize the magnetic interactions with magnetic markers. A new Concept for the manipulation and controlled guidance of molecules attached to magnetic markers in microfluidic lab-on-a-chip structures will be presented. In addition, printable GMR-sensors based on magnetic Heusler nanoparticles will also be introduced.