Inductance Apparatus for Diamagnetic Measurements

Abstract

Two types of inductance apparatus have been applied to the measurement of the susceptibility of diamagnetic compounds. With an alternating current apparatus, an accuracy of 0.1 percent of the diamagnetic effect, Δκ=0.7·10⁻⁸, has been obtained. The time of measurement was about 8 minutes. Liquids could be easily measured; solids would give no difficulties. In an apparatus with varying coefficient of inductance, the effect of a moving substance in a magnetostatic field was investigated. To date, its precision is a factor of 10 smaller than that obtained with the first apparatus.