06-06E

The Hubbard model for small size clusters is investigated. Using direct diagonalization of the small cluster Hamiltonian, an electronic, magnetic and spin susceptibilities are calculated and their behavior at low temperature is investigated. The temperature behavior of susceptibilities for two- and three-site clusters is investigated for both center and edge of the Brillouin zone. If at given concentration ground state is polarized, a susceptibilities diverge following the Courier law and system is transformed to the magnetically ordered state at $T=0$.