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The Combination of Transcranial Alternating Current Stimulation and Electroencephalogram
Published on: October 10, 2025
Design and implementation of a low temperature, inductance based high frequency alternating current susceptometer
E Riordan1, J Blomgren2, C Jonasson2
1Department of Physics & Astronomy, Cardiff University, Cardiff CF24 3AA, United Kingdom.
Abstract:
We report on the implementation of an induction based, low temperature, high frequency ac susceptometer capable of measuring at frequencies up to 3.5 MHz and at temperatures between 2 K and 300 K. Careful balancing of the detection coils and calibration allow a sample magnetic moment resolution of 5 × 10-10 Am2 at 1 MHz. We discuss the design and characterization of the susceptometer and explain the calibration process. We also include some example measurements on the spin ice material CdEr2S4 and iron oxide based nanoparticles to illustrate functionality.
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