Torque magnetometry in pulsed magnetic fields with use of a commercial microcantilever

A miniature torquemeter for use in a pulsed magnetic field is developed by utilizing a commercially available piezoresistive microcantilever. The high sensitivity of ∼5×10 −13   Am 2 at 38 T is achieved. The response to faster signals were considerably improved due to high eigenfrequency of the cant...

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Bibliographic Details
Published in:Review of scientific instruments 2002-08, Vol.73 (8), p.3022-3026
Main Authors: Ohmichi, E., Osada, T.
Format: Article
Language:English
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Summary:A miniature torquemeter for use in a pulsed magnetic field is developed by utilizing a commercially available piezoresistive microcantilever. The high sensitivity of ∼5×10 −13   Am 2 at 38 T is achieved. The response to faster signals were considerably improved due to high eigenfrequency of the cantilever (f∼250–300 kHz). In this article, we successfully demonstrate the magnetic torque data of samples of sub-μg order in pulsed magnetic fields up to 38 T with pulse duration of less than 60 ms. We also found that the de Haas–van Alphen data are in good agreement with the previous reports obtained in steady magnetic fields.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.1491999