Christoph Frommen

Scientist

Education:
PhD in Chemistry, Philipps-Universität, Marburg (Germany) 1995.

Field of Expertise:

a) Extensive research experience in magneto-structural correlations of 1D-magnets; synthesis and characterization of  hard magnetic nanoparticles (e.g. CoPt); formation of magnetic-polymer composites for improved self-assembling.

b) More than 10 years of experience in the mechano-chemical and wet-chemical synthesis of complex hydrides; e.g. alanates, and borohydrides, with special emphasis on rare-earth borohydrides and composites between rare-earth and alkali borohydrides.

The research activities are currently focused on the synthesis and physical characterization of novel (complex) metal hydrides and intermetallics. These systems are studied by means of powder X-ray and neutron diffraction, differential scanning calorimetry, IR/Raman spectroscopy, volumetric methods (Sieverts-type, PCT), temperature programmed desorption, and others. Correlations between structural features and physical properties, e.g. reaction kinetics, thermodynamic properties etc. are studied.

The research activities are currently focused on two major areas:

1) Magneto-structural correlations in magnetocaloric materials, with focus on hexagonal MM’P-type ferromagnets (M,M’ = Mn, Co, Ni, Fe, Cr, Cu, and P = Ge, Si, Sn, B, C, Al, In).

2) Synthesis and characterization of novel (complex) metal hydrides and intermetallics.

These systems are studied by means of powder X-ray and neutron diffraction, VSM and SQUID-magnetometry, differential scanning calorimetry, IR/Raman spectroscopy, volumetric methods (Sieverts-type, PCT), temperature programmed desorption, and others. Correlations between structural features and physical properties, e.g. reaction kinetics, thermodynamic properties etc. are studied.

Member of the Physics department staff since September 2011