Fabrication of a NiCrAl pressure cell and the application to a two-leg ladder compound Sr2Ca12Cu24O41

A hybrid NiCrAl pressure cell was fabricated to measure magnetic quantities above 3 GPa. A pressure of 4 GPa was achieved and the pressure cell was found to be reusable even after pressurizing trial up to 4GPa. The inner diameter of the cylinder expanded 2.5% at 4 GPa. The pressure cell was applied to the 63Cu-NMR measurement at an optimum pressure of 3.8 GPa in a pressure-induced superconductor Sr2Ca12Cu24O41.