Nonmagnetic indenter-type high-pressure cell for magnetic measurements

Abstract

An indenter-type high-pressure cell has been developed for electric and magnetic measurements in low-temperature and high-magnetic-field environments. The maximum pressure achieved at low temperatures is more than $4.5\mathrm{GPa}$ , which is higher than that of a conventional piston-cylinder cell. The typical sample space at maximum pressure is $1.6\mathrm{mm}$ in diameter and approximately $0.7\mathrm{mm}$ in depth, and magnetic measurements such as ac-susceptibility and nuclear magnetic resonance can be performed using a miniature coil. All the components of the indenter cell are made of nonmagnetic materials that have enough thermal conductivity for low-temperature experiments using a ${}^3\mathrm{He}∕{}^4\mathrm{He}$ dilution refrigerator. Another indenter-type cell designed for a commercial superconducting quantum interference device magnetometer is also reported.