Berlin 2015 – wissenschaftliches Programm
TT 71.32: Poster
Mittwoch, 18. März 2015, 15:00–18:00, Poster B
Crystal growth of frustrated materials with kagome-lattices — •Christian Klein, Pascal Puphal, and Cornelius Krellner — Physikalisches Institut, Goethe-Universität, Frankfurt, Germany
Kagome-lattices are promising materials to investigate frustrated quantum spin systems with a possible quantum spin liquid (QSL) ground state . High-quality single crystals are essential to distinguish between disordered magnetic ground-states and a true QSL.
We report on synthesis and characterization of the materials Herbertsmithite (Cu3Zn(OH)6Cl2) and Barlowite(Cu4(OH)6BrF), which represent model systems for two-dimensional Kagome-layered structures . The kagome-layers are build up by copper ions and separated from each other through a transition-metal cation, so that a quasi-two-dimensional system is created . Single crystals were grown under hydrothermal conditions.
We present the details of the crystal growth and preliminary substitution experiments to study their influence on the magnetic properties.
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