Dresden 2020 – wissenschaftliches Programm
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TT 5.4: Vortrag
Montag, 16. März 2020, 10:15–10:30, HSZ 304
Crystal growth and characterization of ZrFe4Si2 — •Katharina M. Zoch, Isabel Reiser, Alexander Bodach, Kristin Kliemt, and Cornelius Krellner — Physikalisches Institut, Goethe Universitaet Frankfurt, 60438 Frankfurt, Germany
The crystal structure of ZrFe4Si2 consists of edge-linked Fe-tetrahedra along the crystallographic c-direction. This type of arrangement is prone to show frustration and low dimensional fluctuations. First results indicate that ZrFe4Si2 displays some sort of weak magnetic order at unusual low temperatures for a Fe-based compound, as well as deviant behavior in specific heat and resistivity measurements . To further investigate these features, we are in need of good quality single crystals. The crystal growth is a challenging subject since the compound is strongly peritectic melting and its melted elements are reactive with common crucible materials under crystal growth conditions. We show first results of the crystal growth from a levitating melt using the Czochralski method. Furthermore, we present the characterization of the obtained samples especially near the suspected magnetic order.
 K. Weber: Intermetallic 3d systems close to a magnetic instability: new unusual cases, Dissertation TU Dresden (2017)