There are some important problems in condensed matter physics than can be
addressed by nuclear magnetic resonance measurements, even in the low
homogeneity (20 ppm/mm) general purpose magnets. Instrumentation for such
experiments is available and various avenues for development of more homogenous
high field magnets are being followed. Techniques and magnets for high field
magnetic resonance experiments in the pulsed magnets are also being
developed.
Three spectrometers are now available for experiments in the general purpose
magnets of the NHMFL:
- Pulsed, single frequency, 10 to 1000 MHz, made at NHMFL.
- Continuous, 500 to 2000 MHz, made at NHMFL.
- Continuous, 10 to 300 MHz, manufactured by TecMag
The pulsed
spectometer covers all commonly used nuclei except 1H and
19F in fields to 27 T. The high frequency limit will be increased
as higher field magnets become available.
Sample holders are available for the 20 T superconducting magnets and all of
the resistive magnets. Those on hand cover the frequency range from 350 to 900
MHz and have a sample temperature range of 1.6 to 300 K. A sample holder for
temperatures down to 20 mK is being developed.
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Curator: Scott Hannahs <sth@magnet.fsu.edu>
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