Abstract
The attractive physical properties of filled skutterudites are reviewed in terms of strongly correlated electrons system. Furthermore, our recent results on the filled skutteduite phosphides synthesized under high-pressure and high-temperature conditions are reported. Sm-based filled skutterudites SmT4P12 (transition metal T = Fe, Ru, Os) show the variety of physical properties. We discuss the change of the characteristic behavior in SmT4P12 by the replacement of transition metal. We reveal that the heavy rare earth based filled skutteduite TbRu4P12 shows a multiple antiferromagnetic ordering. The anomalous phase diagram is discussed.
