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

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 Fe(x)Pt(100-x) system with various thin film thicknesses and...

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Detalles Bibliográficos
Autores principales: Zhang, Yiou, Hao, Qiang, Xiao, Gang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6719211/
https://www.ncbi.nlm.nih.gov/pubmed/31412619
http://dx.doi.org/10.3390/s19163537
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author Zhang, Yiou
Hao, Qiang
Xiao, Gang
author_facet Zhang, Yiou
Hao, Qiang
Xiao, Gang
author_sort Zhang, Yiou
collection PubMed
description 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 Fe(x)Pt(100-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.
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spelling pubmed-67192112019-09-10 Low-Frequency Noise of Magnetic Sensors Based on the Anomalous Hall Effect in Fe–Pt Alloys Zhang, Yiou Hao, Qiang Xiao, Gang Sensors (Basel) Article 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 Fe(x)Pt(100-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. MDPI 2019-08-13 /pmc/articles/PMC6719211/ /pubmed/31412619 http://dx.doi.org/10.3390/s19163537 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhang, Yiou
Hao, Qiang
Xiao, Gang
Low-Frequency Noise of Magnetic Sensors Based on the Anomalous Hall Effect in Fe–Pt Alloys
title Low-Frequency Noise of Magnetic Sensors Based on the Anomalous Hall Effect in Fe–Pt Alloys
title_full Low-Frequency Noise of Magnetic Sensors Based on the Anomalous Hall Effect in Fe–Pt Alloys
title_fullStr Low-Frequency Noise of Magnetic Sensors Based on the Anomalous Hall Effect in Fe–Pt Alloys
title_full_unstemmed Low-Frequency Noise of Magnetic Sensors Based on the Anomalous Hall Effect in Fe–Pt Alloys
title_short Low-Frequency Noise of Magnetic Sensors Based on the Anomalous Hall Effect in Fe–Pt Alloys
title_sort low-frequency noise of magnetic sensors based on the anomalous hall effect in fe–pt alloys
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6719211/
https://www.ncbi.nlm.nih.gov/pubmed/31412619
http://dx.doi.org/10.3390/s19163537
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AT haoqiang lowfrequencynoiseofmagneticsensorsbasedontheanomaloushalleffectinfeptalloys
AT xiaogang lowfrequencynoiseofmagneticsensorsbasedontheanomaloushalleffectinfeptalloys

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