Metastable and Nanostructured Materials


Joint Study with HGST / Western Digital

The joint study between the IFW Dresden and HGST a Western Digital company, San Jose, CA, USA has officially started in 2013. Herein, it is our task to characterize the structure, chemical composition and magnetic properties of prototype hard disk materials provided by HGST. Current state of the art CoCrPt-based perpendicular recording media are foreseen to reach their maximum areal storage densities at roughly 1.5 GBit/in², while granular L10-ordered FePt-based media are envisioned to overcome this limit utilizing heat assisted magnetic recording (HAMR) strategies. Unveiling the correlation between the magnetic properties and the atomic structure of the FePt-based nanomagnets in these granular media lies at the heart of our collaboration which aims at improving the understanding of the overall magnetic performance of these materials. [S. Wicht et al., J. Appl. Phys. 114 (2013) 063906].

   HGST - A Western Digital Company, San Jose, CA, USA

PhD scholarship on Solid state hydrogen storage

Downsizing solid state hydrogen storage materials promises enhanced (de-)hydrogenation kinetics and (limited) control over their thermodynamic properties. Along this line, lightweight metal nanoparticles (Mg, Al, …) and complex hydrides (NaAlH4, LiBH4, …) are investigated. While the former are prepared by inert gas condensation and intrinsically small, the latter are confined to nanoscopic sizes by embedding them into porous carbon matrices through melt infiltration. Likewise prepared materials are primarily characterized using in-situ transmission electron microscopy (TEM) and valence electron energy loss spectroscopy (VEELS). For this project, Dipl.-Phys. Alexander Surrey was awarded with a PhD scholarship by the Reiner Lemoine Foundation.

    Reiner Lemoine-Stiftung, Neuss, Germany

>>> Internal and external collaborations.

>>> External service.

Department Info

Dr. Bernd Rellinghaus

Phone: +49-351-4659-754
Fax: +49-351-4659-9754
Email: b.rellinghaus(@t)