The organic-inorganic hybrid systems consist of organic and inorganic components forming a 2 D layered structure. The distance between adjacent magnetic layers is quite far, approximately 2 nm. Although this distance is almost the same for different divalent transition-metal ions, mangetic behavior of every systems is different. We propose to study the spin dynaics in two types hybrid systems under high fields by uing HiFi. We aim to achieve hints to discuss mechanisms to form a 3 D coherent ordering, the transformation from a 2D short-range ordering to the 3D long-range ordering, and the origin of the low-dimensional diffusion behavior of spin-excited states in the 2 D magnetic layers.