Micromechanical "Trampoline" Magnetometers for Use in Large Pulsed Magnetic Fields

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Science  01 May 1998:
Vol. 280, Issue 5364, pp. 720-722
DOI: 10.1126/science.280.5364.720

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A silicon micromechanical magnetometer was constructed and successfully used in 60-tesla pulsed magnetic fields of less than 100-millisecond duration. The device is small, inexpensive to fabricate, and easy to use. It features a fast mechanical response (up to 50,000 hertz) and extremely high sensitivity yet is relatively robust against electrical and mechanical noise. Quantum oscillations in the magnetization of a 1-microgram sample of an organic superconductor, κ-[bis(ethylenedithio)tetrathiafulvalene]2Cu(NCS)2, have been observed with this device.

  • * To whom correspondence should be addressed. E-mail: aksyuk{at}

  • Present address: Departments of Chemistry and Physics, University of Kentucky, Lexington, KY 40506, USA.

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