Calibration of Manganin pressure gauge for diamond-anvil cells

Pressure calibration for most diamond-anvil cell (DAC) experiments is mainly based on the ruby scale, which key to implementing this powerful tool high-pressure study. However, scale can often hardly be used programmably controlled DAC devices, especially piezoelectric-driving cells, where a continuous pressure required. In work, we present an effective gauge DACs made of Manganin metal four-probe resistivity measurements. dependence its well established and shows excellent linear relations in 0–30 GPa range with slope 23.4 (9) first-cycle compression, contrast that multiple-cycle compression decompression having nearly identical 33.7 (4) likely due strain effect. addition, such-established continuously monitoring DACs, reliability method also verified by fixed-point Bi standard. Realization would offer many opportunities study dynamics, kinetics, critical behaviors pressure-induced phase transitions.