Pressurehyphen;dependent electrical resistivity measurements on CePtGe and CePt2, which belong to the class of magnetically ordering Kondo lattice systems, reveal that the antiferromagnetic transition temperatureTN, as determined from the position of the maximum of the derivativedrgr;/dT, depends only weakly on the applied external pressure. At higher temperatures the shape of the rgr;(T) curve indicates the presence of crystalhyphen;field effects. Application of pressure does not affect the highhyphen;temperature behavior significantly. In view of these results, which suggest a characteristic temperature smaller thanTNfor these systems, we discuss a steep decrease of the resistivity atTape;10 K in CePtGe and CePt2in terms of magnetic shorthyphen;range order between local moments rather than in terms of formation of a coherent Kondo ground state.
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