Solid State Physics in UK Temperatures-electron & nuclear

1996年，我们有过两次会面。我们讨论了我们的合作项目。然后我们确定了对Onuki教授小组生产的高质量稀土化合物晶体进行超低温测量的主要项目，我们将报告该项目的一些结果。1）CeRu_2Si_2;金泽大学：对CeRu_2Si_2单晶进行了磁化率测量。磁化率单调增加，下降到300欧姆。磁化率表明磁矩很小，为<approximately equal>0.02 μ_B。2）PrIn 3; ISSP：PrIn 3化合物是超精细增强核自旋系统。在0.13 mK下观察到核自旋有序，通过比热和磁化强度的测量，估计了磁自旋结构。3）PrCu 6;大坂市立大学：超精细增强核自旋系统PrCu 6在2.2mK下有序，观察到畴结构。这是在实验室框架内首次观察到核自旋系统的畴结构。

In 1996, we had meeting twice. We discussed our co-works projects. Then we determined the main project that ultra-low temperature measurements for high qualty rare earth copmound crystal produced by Prof.Onuki's group.We will report some results of the project.1) CeRu2Si2 ; Kanazawa University : The magnetic susceptibility measurements were done for CeRu2Si2 single crystal which is known as the nonmagnetic and nonsuperonducting heavy electron compoud. The magnetic susceptibility increases monotonically down to 300mk. The magnetic susceptibility suggests the small magnetic moment<approximately equal>0.02mu_B. This results suggests that the crystal is of very good qualty.2) PrIn3 ; ISSP : PrIn3 compound is the hyperfine-enhanced nuclear spin system. The nuclear spin ordering was observed at 0.13 mK.From the specific heat and the magnetization measurements, the magnetic spin structure was estimated.3) PrCu6 ; Osaka City University : The hyperfine-enhanced nuclear spin system PrCu6 orders at 2.2mK.The domain structure was observed. This is the first observation of he domain structure of nuclear spin system in a laboratory frame.