Magnetization and magnetic susceptibility of kunzite

Abstract We have studied the high-field magnetization up to 14.5 T and magnetic susceptibility in the temperature range 1.6–400 K of three different samples of natural kunzite crystals, being a variety of spodumene (LiAlSi2O6) and containing transition metal ions. It appears that the total magnetization and susceptibility consist of the paramagnetic contribution following from the temperature-dependent Brillouin-type behavior of magnetic ions and temperature-independent diamagnetic contribution of the spodumene matrix which we have found as being equal to −3.5×10−7 emu/g. We have identified the Mn2+ ions as the dominant ones in the kunzites studied and we have determined the molar concentration of these ions as lying in the range 0.2–0.4%.