Kavli Affiliate: Simon Groblacher
| First 5 Authors: , , , ,
| Summary:
A tunable magnetic field at low temperatures is essential for numerous
applications, including spintronics, magnetic resonance imaging, and condensed
matter physics. While commercial superconducting vector magnets are available,
they are complex, expensive, and often not adaptable to specific experimental
needs. As a result, simple in-house designs are often being used in research
environments. However, no comprehensive step-by-step guide for their
construction currently exists. In this work, we provide a detailed manual for
designing and building a cryogenically compatible three-axis vector magnet. The
system is tested at the mixing chamber of a dilution refrigerator at
temperatures ranging from 15 mK to 4 K, with no significant increase in base
temperature. Safety measures are implemented to mitigate heating from
quenching. The coils are successfully driven with DC currents as high as 3 A,
generating magnetic fields of up to 2.5 T in the bobbin’s bore and 0.4 T at the
sample position. Magnetic field measurements using Hall sensors demonstrate
good agreement with the predictions of the designed performance.
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