A simple bridge to operate an AC susceptometer

We have designed and fabricated an inexpensive AC susceptometer which works around room temperature. The susceptometer uses the principle of a mutual inductance bridge with a null detection algorithm. The bridge was balanced by two digitally controlled stepper motors coupled with two highly linear p...

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Bibliographic Details
Published inEuropean journal of physics Vol. 41; no. 5; pp. 55501 - 55518
Main Author Roy, Subhasish
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.09.2020
Subjects
AC susceptometer
bridge balance
inexpensive
null detection
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Summary:We have designed and fabricated an inexpensive AC susceptometer which works around room temperature. The susceptometer uses the principle of a mutual inductance bridge with a null detection algorithm. The bridge was balanced by two digitally controlled stepper motors coupled with two highly linear potentiometers. The susceptometer was tested with double-perovskite structured samples with transition temperatures close to room temperature. The apparatus would be very useful for low-budget research laboratories which deal with magnetic experiments.
Bibliography:EJP-105167.R2
ISSN:0143-0807
1361-6404
DOI:10.1088/1361-6404/ab92d5