Differential method for Hall-coefficient measurements in an a.c. magnetic field
- 1 June 1965
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 1 (4) , 86-87
- https://doi.org/10.1049/el:19650080
Abstract
A compensation method for Hall-coefficient measurements with an audiofrequency magnetic field and a direct sample current is described. An a.c. magnetic field is generated in a ferritecored coil working in a series-resonance circuit.1Compensation is achieved over a wide frequency range of the magnetic field by the use of RC bridges and a differential amplifier. The method eliminates spurious e.m.f.s and after small modifications permits the (pulsed) changes of Hall coefficient to be measured with high sensitivity.Keywords
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