Heat capacity of Ce1−xLaxCu4Al Kondo alloys

► The linear specific heat coefficient decreases with the increasing La concentration. ► The specific heat analysis indicates that the crystal field parameters are practically independent of the La content. ► The Kondo interaction and in consequence Kondo temperature have been included in the analysis of the magnetic part of CeCu4Al. ► The reduction of the magnetic entropy at higher temperatures can be ascribed to the Kondo effect. ► At low temperatures, the ratio Cp/T shows a logarithmic dependence for H = 0 T.