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

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 sensit...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 1998-05, Vol.280 (5364), p.720-722
Main Authors: Aksyuk, V., Balakirev, F. F., Boebinger, G. S., Gammel, P. L., Haddon, R. C., Bishop, D. J.
Format: Article
Language:English
Subjects:
Applied sciences
Capacitance
Design and construction
Electric pulses
Electronics
Exact sciences and technology
Heat
Magnetic fields
Magnetism
Magnetization
Magnetometers
Magnets
Measurement
Measuring instruments
Microelectronics
Parallel plates
Quantum electrodynamics
Silicon
Solenoids
Testing, measurement, noise and reliability
Trampolines
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Summary: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]$_2$Cu(NCS)$_2$, have been observed with this device.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.280.5364.720