ASTM F76 Determining Resistivity, Hall Coefficient, and Mobility 

    What is ASTM F76?

    The ASTM F76 standard test procedure is employed to determine resistivity, Hall coefficient, and Hall mobility. It helps to figure out the best material for making semiconductor devices. ASTM F76 can infer other characteristics for material specification under certain conditions, as specified in the Appendix, such as charge carrier density and drift mobility.

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    The standard test method ASTM F76 includes two ways for assessing the resistivity and Hall coefficient of single-crystal semiconductor specimens. The test specimen requirements are the most significant difference between these test techniques. The values expressed in the accepted metric units are taken as standard. The standard will be the values expressed in accepted metric units.

    ASTM F76 Specimen Preparation Guide

    For ASTM F76, the thickness must be homogeneous to within 1% of the total thickness and should not exceed 0.10 cm. The specimen’s entire length should be between 1.0 and 1.5 cm.

    ASTM F76 Testing Procedure

    Test methods in ASTM F76Section
    Test method A6-11
    Test method B12-17

    ASTM F76 Analysis Result and Interpretation

    The ASTM F76 standard test procedure is employed to determine resistivity, Hall coefficient, and Hall mobility. 

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    ρ = 1/eμn

    RH = r/nq

    μH = rμ

    where ρ is resistivity, μH is Hall mobility, and RH is Hall coefficient.

    Updated on August 20, 2026

    Gokula Srinivasan Selvam
    About Author
    Gokula Srinivasan Selvam is a Material Testing Associate at Matestlab Inc. and holds a postgraduate degree in Ceramic Engineering from IIT (BHU), Varanasi. His academic background and professional experience are centered on advanced ceramic materials, their processing, characterization, and performance evaluation.
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