Abstract
Two balances, one for measurement of ferromagnetic magnetization, the other for paramagnetic susceptibility measurements, are described. Designs are based on Sucksmith's ring balance but the ring and optical lever system of the latter has been replaced by a strain gauge bridge which allows the force on the magnetic specimens to be determined via potentiometer readings. The modified balances are very robust, insensitive to vibration and, if desired, suitable for direct recording. Relative accuracies to 0.3% and 0.5% are obtained respectively for the ferromagnetic and paramagnetic systems.
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