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TT: Tiefe Temperaturen

TT 19: Correlated Electrons: Low-dimensional Materials

TT 19.10: Vortrag

Dienstag, 28. März 2006, 16:15–16:30, HSZ 301

From weakly coupled tetrahedra to molecular like host guest magnets — •R. Takagi¹, R. Becker¹, M. Johnsson¹, R. K. Kremer², R. Valenti³, and P. Lemmens⁴ — ¹Dept. Inorg. Chem., Stockholm Univ., Sweden — ²MPI-FKF, Stuttgart, Germany — ³Univ. Frankfurt, Germany — ⁴IPKM, TU Braunschweig, Germany

The search for novel weakly coupled or molecular like magnets in the range of lone pair oxohalogenides based on Cu²⁺, Ni²⁺, and Mo²⁺ has been very fruitful in recent years. We give an overview on their structural, electronic and magnetic properties. Established magnetic structures have dimers, chains, tetrahedra, 5- and 13-spin centers. The latter are realized as guests in cages of high symmetry host structures.
Work supported by DFG SPP1073 and ESF-HFM.