Hütten A. – TechConnect Briefs

Granular magnetoresistance effects in systems with organic matrices

Meyer J., Schäfers M., Rempel T., Hütten A., Bielefeld University, DE

The granular giant magnetoresistance effect was originally studied in systems with ferromagnetic granules embedded in a metallic matrix. In contrast to previous systems, we have tested conductive nonmagnetic gels as matrices for the Co nanoparticles. [...]

A new route to control the enhancement of structural and anisotropy ordering in two-dimensional particle arrays

Regtmeier A., Wittbracht F., Dück I., Rempel T., Weddemann A., Hütten A., Bielefeld University, DE

For the realization of data storage devices two fundamental requirements are necessary to guarantee good functionality: a) particles need to be arranged within a sizeable, two-dimensional monolayer of high spatial ordering and b) magnetic states [...]

Magnetic nanoparticles as components of magnetoresistance sensors: the gGMR-sensor

Weddemann A., Ennen I., Regtmeier A., Hütten A., Zahn M., Massachusetts Institute of Technology, US

Superparamagnetic microbeads and nanoparticles have a wide range of applications. Due to their magnetic stray field they influence soft magnetic material nearby which allows for the magnetic recognition of such particles by magnetoresistive sensors. Such [...]