J. Phys. IV France 114 (2004) 291
Anisotropic susceptibility of -(BEDT-TTF) 2KHg(SCN) 4W. Biberacher1, P. Christ2, M.V. Kartsovnik1, D. Andres1, H. Müller3 and N. Kushch4
1 Walther-Meissner-Institut, Walther-Meissner-Str. 8, 85748 Garching, Germany
2 Max-Planck-Institut für Physik, 80805 München, Germany
3 European Synchrotron Radiation Facility, 38043 Grenoble, France
4 Institute of Problems of Chemical Physics, 142432 Chernogolovka, Russia
We report detailed studies of the anisotropy of the magnetic susceptibility by cantilever torque measurements in the temperature range from 1.3 K to 15 K and in magnetic fields up to 15 T. There is a considerable anisotropy of in the normal state above 10 K. The orientation of the susceptibilty tensor is slightly different from the crystalline a, b* and c axes. These results can be qualitatively explained by the orientation of the BEDT-TTF molecules in the crystal structure. In the low temperature phase an additional anisotropy develops, where the orientation is fixed to the normal of the two-dimensional layers. Key words. Organic metals - susceptibility - magnetic torque.
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