High-quality single-crystal growth and the research of the electronic state of the filled-skutterudite compounds

本研究采用助熔剂法和高压合成法生长了高质量的填充方钴矿RT_4X_<12>（R=稀土，T=Fe，Ru，Os，X=P，As，Sb）和笼状结构化合物RT_2Al_（10）单晶<10>，并利用电阻率、磁化强度、比热和de Haas-van Alphen效应等研究了它们的电子态，从而获得了这些化合物的非常规磁性和超导电性的新信息。

In this research, I have grown highr-quality single-crystals of the filled-skutterudites RT_4X_<12>(R=rare earth, T=Fe, Ru, Os, X=P, As, Sb) and the cage-structure compounds RT_2Al_<10> by using the flux-method and the high-pressure synthesis, and studied the electronic states by using the resistivity, magnetization, specific heat and the de Haas-van Alphen effect etc. As the result, we heve gained new information about the uncoventional magnetism and superconductivity in these compounds.