Welcome

The focus of my scientific work is the study of competing interactions, in transition metal oxides. Competition between interactions of comparable strength often results in frustration as they attempt to produce different ground states that are nearly degenerate. Although competing interactions may inhibit the establishment of robust long-range order, they are a powerful driving force behind a variety of phenomena that are of considerable interest in materials science, including colossal magnetoresistance, relaxor ferroelectricity, and multi-ferroic behavior such as magneto-ferroelectricity, magneto-capacitance and magneto-thermopower. The focus on transition metal oxides is due to the fact that these materials display a particularly rich array of competing interactions with a high degree of tunability.

At the HZB I run the Novel Materials group in which we perform synthesis of ceramic powder and single crystals of various oxides of interest. Our current focus in perovskite manganite multiferroics as well as NaxCoO2 or similar systems.

In addition I am in charge of the high resolution powder diffractometer E9 in our BENSC facility. For more information on E9 click here.

Dimitri Argyriou