Magnetic and electronic properties of heavy fermion compound CeCu4In and valence fluctuating compound CeNi4In

Ternary ordered Laves phases RENi4Cd

“…For CeNi 4 Cd the cell volume is even smaller than that of SmNi 4 Cd, indicating intermediate-valent or even tetravalent cerium (vide infra). Similar behavior has recently been observed also for isotypic CeNi 4 Mg [9] and CeNi 4 In [20]. Synthesis attempts for a lanthanum and europium containing member of the RENi 4 Cd series were not successful.…”

Thermoelectric power in (, Ni; , Ga) compounds

“…CeCu 4 Ga was found to be nonmagnetic down to 30 mK, whereas the parent Kondo lattice compound CeCu 5 is antiferromagnetic below 4 K. Similar drop of the magnetic order occurs for CeCu 4 Al [1][2][3][4][5][6] and CeCu 4 In [7]. The electronic specific heat coefficient of CeCu 4 M takes huge values of the order of 2-3 J K −2 mol −1 .…”

“…The electronic specific heat coefficient of CeCu 4 M takes huge values of the order of 2-3 J K −2 mol −1 . The electrical resistivity studies have shown that the Kondo temperature is in the range 2-5 K and below about 1 K the coherence onset occurs [1][2][3][4][5][6][7][8]. A large peak in thermopower (TEP) was observed for CeCu 4 Ga [5] at temperature much higher then the Kondo temperature.…”

Thermoelectric Properties of CeCu4Ag Compound

“…The substitution of M (M = Ga, Al, In) into CeCu 5 , which increases the average electron density, seems to be sufficient to screen all the localized 4f moments in CeCu 4 M, which leads to a crossover from a magnetic ground state in CeCu 5 to a nonmagnetic ground state in CeCu 4 M [1][2][3].…”

“…Preparation of sample and experiment are the same as in the paper [3]. The X-ray diffraction (XRD) measurements have shown that CeCu 4 Ag crystallizes in the cubic MgSnCu 4 -type structure (space group F -43m, a = 7.273 Å), however, a contribution of secondary phases has been detected.…”