The phase diagram of a-(BEDT-TTF)2KHg(SCN)4 for magnetic fields almost parallel to the layers

The magnetic torque and Faraday force magnetisation of α-(BEDT-TTF) 2 KHg(SCN)4 have been studied in magnetic fields up to 28 T and temperatures between 1.4 K and 15 K. The magnetic field was oriented nearly parallel to the highly conducting layers. The low temperature ground state is characterized by additional temperature dependent components of the susceptibility tensor, which are exactly parallel to the layers. The transition temperature for almost parallel direction of the magnetic field follows a B 2 law up to 28 T.