Behavior of a manganin coil at elevated temperatures and pressures

Abstract

We have determined the temperature dependence in the first‐order pressure coefficient of a manganin coil to be dβ/dT= (4.2±0.8) ×10⁻⁷ (kbar °C)⁻¹ in the equation R (T,P) =R (T,0)(1+βP+γP²), where R (T,P) is the coil resistance at temperature T and pressure P. The measurements were performed by simultaneously measuring the coil resistance and temperature at the transitions of mercury and bismuth, which were observed by differential thermal analysis.