MEASUREMENT OF THE RESISTANCE OF MANGANIN WIRE WITH THE CUBIC-ANVIL TYPE PRESSURE APPARATUS

A pressure cell was developed for the simultaneous measurement of the X-ray diffraction of an internal pressure standard and the electrical resistance of Manganin under the hydrostatic pressure generated by a cubic-anvil type press. Using this pressure cell, the Manganin resistance was measured under pressure calibrated by an internal pressure standard, NaCl, over a continuous pressure range up to about 40 kbar. A linear relationship between the resistance and the pressure was observed over the entire pressure range, and the pressure coefficient of the resistance was 0.23%/kbar. The effect of the nonhydrostaticness of pressure if discussed. © 1979 The Japan Society of Applied Physics.