The temperature dependence of the nuclear quadrupole relaxation rate, in Ag and Na halides with the rock-salt structure, was compared with the results of an ionic model calculation which estimated the degree of covalency. The results were analyzed in terms of the ionicity of ANB8-N binary compounds.

T.Kanashiro, Y.Michihiro, K.Kitahara, T.Yamanishi, Y.Kishimoto, T.Ohno: Solid State Ionics, 1996, 86-88[1], 223-6