  In order to clarify exotic multipole properties of filled skutterudites, we
evaluate multipole susceptibility for $n$=1$\sim$5, where $n$ is the local
$f$-electron number, on the basis of a multiorbital Anderson model constructed
using the $j$-$j$ coupling scheme. For $n$=1, magnetic fluctuations dominate
over low-temperature electronic properties, while for $n$=2 and 4, electronic
states are dominated by both magnetic and quadrupole fluctuations. For $n$=3
and 5, octupole fluctuations are found to be significant, depending on the
crystalline electric field potential. We discuss possible relevance of the
results to actual materials.
