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

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2 Author(s)
Ohmichi, E. ; Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581 Japan ; Osada, T.

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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 Am2 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. © 2002 American Institute of Physics.

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Review of Scientific Instruments  (Volume:73 ,  Issue: 8 )