Electronic transport
properties of RxY1-xNi5Ge3
(R = Ce, Yb) with R elements in Kondo state
Chem.
Met. Alloys 2
(2009) 151-156
https://doi.org/10.30970/cma2.0104
Galyna KOTERLYN, Bogdan MOROKHIVSKII, Mykhaylo
KOTERLYN, Roman GLADYSHEVSKII
The results of an investigation of electrical
resistivity ρ and thermoelectric power S are presented for the solid solutions
CexY1-xNi5Ge3 (x ≤ 0.5) and
YbxY1-xNi5Ge3 (x = 0, 0.5, 1) in
the temperature range 4-400 K. The overall shape of the ρ(T) and S(T) dependences observed for the Ce- and
Yb-containing alloys is typical for paramagnetic intermetallics exhibiting a
combined effect of Kondo and crystal field (CF) interactions with a low
single-ion Kondo temperature TK, which is generally much lower than the
overall CF splitting. The single-ion Kondo interaction does not vary
when the Y sublattice is diluted with Ce (TK
~ 60-80 K). For the Yb-containing alloy, the dependences typical for a
Kondo-impurity ground state with TK
< 5 K were observed.
Electrical resistivity of RxY1-xNi5Ge3 (R = Ce, Yb) as a function of
temperature.
Keywords
Rare earth compounds / Electronic transport / Kondo effects / Crystal fields