A UNIQUE METALLIC SYSTEM CE3PT23GE11

A novel ternary compound Ce3Pt23Ge11 crystallises in a new structure t ype with space group F (4) over bar 3m and a = 1.71833(9) nm. Here we present the results of magnetic, electrical and specific heat measurem ents, obtained on the single crystal and polycrystalline samples. This compound is a metal with normal Ce3+ magnetic behaviour. Although the specific heat at low temperatures rises rapidly to a large value of 2 .5 J/Ce-mol K at 0.38 K, we have not detected any phase transition dow n to this temperature. Only in the temperature range 0.1-1 K a small d ecrease in the resistivity Value can be detected with an inflection po int at approximately 0.3 K. (C) 1997 Elsevier Science S.A.