A Statistical Model for the Dilute Ferromagnet

摘要: A statistical model for a kind of dilute ferromagnetism is presented. In this model, sublattice mixture magnetic ions and non-magnetic ions, the other occupied exclusively by ions. Assuming Ising type exchange interaction between some exact results system are obtained. The Curie temperature decreases as concentration reaches absolute zero at critical concentration. At concentrations higher than value, specific heat remains finite has cusp with vertical tangent temperature. several types lattices also given.