Pressure dependence of the electrical resistivity in the magnetic Kondo lattice systems CePtGe and CePt2

Abstract

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Formation of a superlattice structure and suppression of the magnetic order in Ce1−Pb Pt2 (0 ⩽x< 0.5)

“…Fig. 3(a) displays the resistivity q(T) of Ce 1Àx Pb x Pt 2 in the temperature range 0.35 6 T 6 300 K. The metallic behavior for x = 0 is consistent with the previously reported one [9]. The room-tem- perature value for x = 0.27 is twice as large as that for x = 0.…”

“…Because T K is comparable with T N , CePt 2 was expected to be suitable for the investigation of the quantum critical behavior under pressure. However, no significant change in T N was observed in the applied pressure up to 2 GPa [9]. In contrast, T N was found to be depressed by substituting Rh and Ir for Pt in CePt 2 [10].…”

Review on magnetic and related properties of RTX compounds

“…It has been observed that TN is not very sensitive to pressure in this compound [478]. CePtGe shows an increase in resistivity at ambient pressure on cooling from room temperature and shows a broad peak around 150 K, which deceases steeply down to 15 K and resumes a step drop at 10 K [478]. Such a double peak structure of resistivity suggests the Kondo behavior in this compound as seen in many compounds mentioned earlier.…”

“…The resistivity in CePtGe does not show any change at high temperatures on the application of pressure, however at low temperatures the shoulder accentuates on increasing pressure upto the highest pressure of 17.4 kbar [478]. It has been observed that TN is not very sensitive to pressure in this compound [478]. CePtGe shows an increase in resistivity at ambient pressure on cooling from room temperature and shows a broad peak around 150 K, which deceases steeply down to 15 K and resumes a step drop at 10 K [478].…”

“…The low temperature resistivity data in LaPtSi, NdPtSi and SmPtSi were fitted by power law relation [421]. The resistivity in CePtGe does not show any change at high temperatures on the application of pressure, however at low temperatures the shoulder accentuates on increasing pressure upto the highest pressure of 17.4 kbar [478]. It has been observed that TN is not very sensitive to pressure in this compound [478].…”