Structural Properties of REM2Sn2 (RE=La, Ce and M=Ni, Cu)
A. Ślebarski, K. Kaczmarska
Institute of Physics, Silesian University, Uniwersytecka 4, 40-007 Katowice, Poland

and J. Pierre
Laboratoire Louis Néel, C.N.R.S. 166X, 38042 Grenoble, France
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The lattice parameters a and c of CeM2Sn2 show an anomalous temperature dependence compared to the analogous variations for LaM2Sn2. The anomaly Δa of thermal expansion for CeCu2Sn2 has a maximum around 90 K, whereas Δc has a maximum near 140 K, near to the maximum of the magnetic resistivity Δρ.
DOI: 10.12693/APhysPolA.85.267
PACS numbers: 65.70.+y, 75.30.Mb