| Abstract: | Investigations of the temperature- and concentration dependence of the spin-lattice relaxation time T1 in ferroelectric GASH (= Guanidinium aluminium sulfate hexahydrate) single crystals doped with Cr3+-ions are reported. The concentration-dependence found on the higher concentrated crystals C 0.1% Cr3+) as well as the observed cross-relaxation are explained in terms of spin-lattice relaxation via exchange pairs. Using the VAN VLECK formalism T1 has been estimated for Cr3+: GASH by comparision of the present system and K-Cr-alum. |
