MODIFIED SUCKSMITH BALANCES FOR FERROMAGNETIC AND PARAMAGNETIC MEASUREMENTS

Two balances, one for measurement of ferromagnetic magnetization, the other ibr paramagnetic susceptibility measurements, are described. Designs are based on Sucksmith's ring balance but the ring and optical lever system of the latter was replaced by a strain gage 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 of 0.3% and 0.5% are obtained respectively for the ferromagnetic and paramagnetic systems. (auth)