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Cryogenic Sample Loading into a Magic Angle Spinning Nuclear Magnetic Resonance Spectrometer that Preserves Cellular Viability

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Rotating sample magnetometer for cryogenic temperatures and high magnetic fields.

M Eisterer¹, F Hengstberger, C S Voutsinas

¹Atominstitut, Vienna University of Technology, Stadionallee 2, 1020 Vienna, Austria. eisterer@ati.ac.at

The Review of Scientific Instruments

|July 5, 2011

Summary

This summary is machine-generated.

We developed a novel rotating sample magnetometer (RSM) for variable temperature insert (VTI) cryostats. This high-resolution magnetometer offers superior performance at high magnetic fields and sweep rates compared to traditional systems.

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Area of Science:

Materials Science
Condensed Matter Physics
Magnetometry

Background:

Conventional magnetometers face limitations in high-field and variable-temperature environments.
Integrating complex instrumentation within cryostats, especially high-field systems, presents significant design challenges.

Purpose of the Study:

To design and implement a high-performance rotating sample magnetometer (RSM) suitable for operation within a variable temperature insert (VTI) of a cryostat.
To overcome space and cryogenic temperature constraints inherent in high-field magnet systems.

Main Methods:

Development of a compact pick-up coil system to accommodate a small magnet bore size.
Careful engineering of bearing systems to function reliably at cryogenic temperatures.
Integration of the RSM within a gas-flow cryostat coupled with a high-field superconducting magnet.

Main Results:

The implemented RSM demonstrates excellent resolution, surpassing typical vibrating sample magnetometers by approximately tenfold.
Achieved high magnetic field sweep rates with superior sensitivity.
The system provides an unprecedented range of temperature and magnetic field operation for this class of magnetometer.

Conclusions:

The developed rotating sample magnetometer (RSM) effectively addresses the challenges of operating sensitive magnetic measurement equipment in demanding cryogenic and high-field environments.
This advanced magnetometer design enables new possibilities for materials characterization and condensed matter physics research over extended temperature and magnetic field ranges.