充填スクッテルダイト化合物の多彩な物性

抄録

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.