GIANT 2ND-ORDER ZEEMAN-EFFECT IN TITANIUM (III) DOPED CESIUM GALLIUM ALUM

Low temperature magnetization data obtained for titanium (III) doped c aesium gallium alum show a spectacular deviation from Brillouin behavi or with the magnetization highly dependent on the strength of the appl ied field at a given value of B/T. This arises from unprecedented high er-order contributions to the magnetization and these measurements aff ord the determination of the Zeeman coefficients to third order. This anomalous magnetic behavior is a manifestation of Jahn-Teller coupling giving rise to low-lying vibronic states which mix into the ground st ate through the magnetic field. (C) 1998 American Institute of Physics . [S0021-9606(98)01132-5].