Automated apparatus takes Hall-effect measurements of specimens of thermoelectric materials at temperatures from ambient to 1,200 K using computer control to obtain better resolution of data and more data points about three times as fast as before. Four-probe electrical-resistance measurements taken in 12 electrical and 2 magnetic orientations to characterize specimens at each temperature. Computer acquires data, and controls apparatus via three feedback loops: one for temperature, one for magnetic field, and one for electrical-potential data.


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    Title :

    Automated High-Temperature Hall-Effect Apparatus


    Contributors:

    Published in:

    Publication date :

    1992-06-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




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