A fully-automatic torque magnetometer controlled by a minicomputer was developed. The sample rotation mechanism enables to determine the crystallographic orientation of a ferromagnetic single crystal automatically within an accuracy of 1° in a few hours by orientating the crystal so as to make the sin 4θ component of the torque curve maximum. A new type of frictionless bearing was adopted to support the sample holder. The range of the measurable torque was 10 3 to 10 5 dyne·cm with an accuracy of 1%.
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Abe et al. (1976) studied this question.