# New method for torque magnetometry using a commercially available membrane-type surface-stress sensor

## TL;DR

This paper introduces a novel torque magnetometry technique utilizing a commercially available membrane-type surface-stress sensor, enabling measurements on small crystals under extreme conditions, offering a new tool for magnetic studies.

## Contribution

The study demonstrates the adaptation of a surface-stress sensor for torque measurements, expanding its application beyond gas sensing to magnetic property analysis.

## Key findings

- Successful measurement of magnetic torque on submillimeter crystals
- Observation of de-Haas-van-Alphen oscillations
- Potential for use as a self-sensitive microcantilever alternative

## Abstract

We present a new method for torque magnetometry by using a commercially available membrane-type surface-stress sensor (MSS). This sensor has a silicon membrane supported by four beams in which piezoresistive paths are integrated. Although originally developed as a gas sensor, it can be used for torque measurement by modifying its on-chip wiring. We demonstrate the magnetic-torque measurement of submillimeter-sized crystals at a low temperature and in strong magnetic fields. This MSS can observe de-Haas-van-Alphen oscillation, which confirms that it can be an alternative tool for self-sensitive microcantilevers.