Sam. Mentink et al., MAGNETIC AND THERMAL-PROPERTIES OF CET(2)X(2) COMPOUNDS (T=NI, CU X=SN, SB), Journal of magnetism and magnetic materials, 144, 1995, pp. 887-888
We present an experimental study of the tetragonal heavy-fermion mater
ials CeT2Sn2 (T = Ni, Cu), CeNi2Sb2 and CeCu1.3Sb2. Their large low-te
mperature specific heat partly results from a small crystalline electr
ic field splitting, which decreases in the CeT(2)X(2) (X = Si, Ge, Sn,
Sb) series with increasing size of the X-atom.