Jmm. Dasilva et al., HIGH-FIELD DIFFERENTIAL SUSCEPTIBILITY OF THE ALLOYS CE(CO1-XNIX)(2), Journal of magnetism and magnetic materials, 146(3), 1995, pp. 319-322
The x dependence of the magnetic susceptibility chi(0) and of the coef
ficient gamma of the linear term of the specific heat of the series Ce
(Co1-xNix)(2) show a minimum around 0.67. This is possibly due to a cr
ystal field effect. The high field differential susceptibility data re
veals that the 4f electron of cerium is in a 'Gamma(7) like' state and
that even if the valence of cerium is constant, chi(0) and gamma woul
d increase with x for x > 0.67.