CRYSTAL-FIELD EFFECTS IN NEW KONDO-LATTICE CENIGA2

Electrical resistivity, thermopower and magnetic susceptibility of solid solutions of substitution for basic compound CeNiGa2, which is a new Kondo lattice with the particularly sharp correlation thin structure g(f)(E) near Fermi level, was investigated. It is shown that the structure g(f)(E) is determined by mutual location of the crystal field excited 4f-sublevels of Ce(Delta(1), Delta(2)) and their Kondo interaction with the conducting electrons. In this case there is a definite correlation (T-K(HT) << Delta(1) approximate to approximate to T-K(BT) << Delta(2), where T-K(HT), T-K(BT) are low and high temperature values of Kondo temperatures ) between the characteristic parameters of the Kondo f-centre.