Development of a resistivity measurement tool under high pressure using diamonds
Ryo MATSUMOTO1, Yoshihiko TAKANO1
High pressure techniques are powerful tools that can directly adjust the crystal structure and electric state of functional materials. A diamond anvil cell (DAC) is a unique tool to perform a physical property measurement above 100 GPa, however, its experiments are extremely difficult. Therefore, we have developed a new DAC with boron-doped metallic diamond electrodes and undoped diamond insulating layer. We can easily measure the resistivity under high pressure because the electrodes and insulating layer are very stable for pressure. In this paper, we report the fabrication process of the new DAC and the results of the resistivity measurements of the thermoelectric material SnSe and the Fe-based superconductor FeSe under high pressure.
- 1 National Institute for Materials Science