Dresden 2009 – wissenschaftliches Programm
TT 18.1: Vortrag
Dienstag, 24. März 2009, 14:00–14:15, HSZ 105
Crystal Growth and Characterization of Ba1−xKxFe2As2 — •Andreas Erb, Franz Czeschka, Monika Bahurupi, and Rudolf Gross — Walther Meissner Institut für Tieftemperaturforschung, Bayerische Akademie der Wissenschaften, Walther Meissnerstr. 8, 85748 Garching, Germany
We report on the growth and characterization of single crystals of Ba1−xKxFe2As2 by electrical transport and magnetization measurements. The crystals were grown from high temperature solutions using tin as a flux. Crystals of several mm size in a-b direction can be grown exhibiting sharp superconducting transitions in both resistive and magnetic measurements. We discuss the problem of intrinsic inhomogeneity of the as-grown crystals as a consequence of the phase diagram for this solid solution system. We also outline scenarios for the application of other crystal growth techniques. This work is supported by DFG within the Research Unit 538.