Next Article in Journal
A Robust DOA Estimator Based on Compressive Sensing for Coprime Array in the Presence of Miscalibrated Sensors
Previous Article in Journal
Carbon-Based Nanomaterials for Plasmonic Sensors: A Review
Previous Article in Special Issue
Magnetic Communication Using High-Sensitivity Magnetic Field Detectors
Open AccessArticle

Low-Frequency Noise of Magnetic Sensors Based on the Anomalous Hall Effect in Fe–Pt Alloys

Department of Physics, Brown University, Providence, RI 02912, USA
*
Author to whom correspondence should be addressed.
Sensors 2019, 19(16), 3537; https://doi.org/10.3390/s19163537
Received: 22 July 2019 / Revised: 9 August 2019 / Accepted: 11 August 2019 / Published: 13 August 2019
(This article belongs to the Special Issue Magnetic Sensing Technology, Materials and Applications)
  |  
PDF [2806 KB, uploaded 13 August 2019]
  |  

Abstract

We took advantage of the large anomalous Hall effect (AHE) in Fe–Pt ferromagnetic alloys and fabricated magnetic sensors for low-frequency applications. We characterized the low-frequency electronic noise and the field detectability of the FexPt100-x system with various thin film thicknesses and Fe concentrations. The noise source consisted of 1/f and Johnson noise. A large current density increased the 1/f noise but not the Johnson noise. We found that the field detectability of the optimized Fe–Pt thin film offers much better low-frequency performance than a highly sensitive commercial semiconductor Hall sensor. Anomalous Hall effect sensors are, therefore, good candidates for magnetic sensing applications. View Full-Text
Keywords: anomalous Hall effect; noise measurement; Fe–Pt alloy anomalous Hall effect; noise measurement; Fe–Pt alloy
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Zhang, Y.; Hao, Q.; Xiao, G. Low-Frequency Noise of Magnetic Sensors Based on the Anomalous Hall Effect in Fe–Pt Alloys. Sensors 2019, 19, 3537.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top