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Related Experiment Video

Updated: May 15, 2026

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials

Published on: January 21, 2016

Fast sweep-rate plastic Faraday force magnetometer with simultaneous sample temperature measurement.

D Slobinsky¹, R A Borzi, A P Mackenzie

¹SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews KY16 9SS, United Kingdom.

The Review of Scientific Instruments

|January 3, 2013

Summary

We developed a novel magnetometer for ultra-low temperatures (50 mK) and high magnetic fields (15 T) with precise sample temperature measurement. This Faraday force magnetometer achieves excellent resolution for magnetic susceptibility studies.

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Area of Science:

Condensed Matter Physics
Materials Science
Experimental Physics

Background:

Accurate magnetic property measurements require specialized instrumentation for extreme conditions.
Existing magnetometers often face limitations in operating temperature, magnetic field strength, or integrated sample monitoring.
The need for high-resolution magnetometry at millikelvin temperatures and high fields is critical for studying quantum materials.

Purpose of the Study:

To design and demonstrate a novel magnetometer for operation at cryogenic temperatures (down to 50 mK) and high magnetic fields (up to 15 T).
To integrate sample temperature measurement capabilities within the magnetometer.
To achieve high resolution for magnetic measurements, including magnetic susceptibility.

Main Methods:

The design utilizes a Faraday force magnetometer principle.
A load-sensing variable capacitor integrated into a plastic body enables fast sweep rates and temperature measurement.
The magnetometer can operate in both DC and oscillatory modes for different measurement types.

Main Results:

The prototype magnetometer demonstrated a resolution better than 1 × 10(-5) emu under moderate gradient fields (~1 T/m).
Integrated sample temperature measurement was successfully implemented.
Successful measurements were performed on Dy(2)Ti(2)O(7) and Sr(3)Ru(2)O(7) demonstrating the instrument's performance.

Conclusions:

The developed magnetometer design is suitable for high-performance magnetic measurements at ultra-low temperatures and high magnetic fields.
The integrated sample temperature measurement and plastic body design offer advantages for experimental flexibility and performance.
The instrument provides a valuable tool for investigating magnetic properties of materials under extreme conditions.