Thermo-mechanical sensitivity calibration of nanotorsional magnetometers
Joseph Losby, Jacob A. J. Burgess, Zhu Diao, David C. Fortin, Wayne K., Hiebert, Mark R. Freeman
TL;DR
This paper presents the development and calibration of highly sensitive nanotorsional magnetometers, enabling precise measurement of magnetization dynamics in small magnetic structures through thermo-mechanical noise calibration.
Contribution
It introduces a fabrication method for nanotorsional resonators and demonstrates their calibration as ultra-sensitive magnetometers.
Findings
Achieved calibration of thermo-mechanical noise for nanotorsional resonators
Determined the ultimate mechanical torque sensitivity of the magnetometers
Enabled investigation of magnetization dynamics in small magnetic elements
Abstract
We report on the fabrication of sensitive nanotorsional resonators, which can be utilized as magnetometers for investigating the magnetization dynamics in small magnetic elements. The thermo-mechanical noise is calibrated with the resonator displacement in order to determine the ultimate mechanical torque sensitivity of the magnetometer.
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