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An automated, ac galvanomagnetic measurement system is described. Hall or van der Pauw measurements in the temperature range 10–300 K can be made at a preselected magnetic field without operator attendance. Procedures to validate sample installation and correct operation of other system functions, such as magnetic field and thermometry, are included. Advantages of ac measurements are discussed.
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Szofran et al. (1985) studied this question.
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