Pressure effect and temperature dependence of lattice constants for Ce(Ru0.85Rh0.15)2Si2

Abstract X-ray powder diffraction has been studied on Ce(Ru 0.85 Rh 0.15 ) 2 Si 2 between 300 and 4 K under pressure up to 32 GPa with a diamond anvil cell, and the lattice constants and the bulk modulus have been obtained. The bulk modulus shows a rapid drop between 100 and 50 K , when the temperature decreases from 300 to 4 K . This tendency is most likely attributed to Kondo effect and/or a sign of a spin density wave.