Automatic Recording Torsional Magnetic Susceptibility Balance

Abstract

A torsional magnetic susceptibility balance suitable for studying the de Haas‐van Alphen effect has been developed in which the torque and magnetic field are recorded continuously while the magnet current is reduced automatically. The torque is recorded as a bucking current to a galvanometer suspension supporting the sample, and the magnetic field is obtained from a recording of the magnet current. A circuit for stabilizing the magnet current is also described.