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Fiber optic magnetic field sensor using Co doped ZnO nanorods as cladding

A fiber optic magnetic field sensor is proposed and experimentally demonstrated. Pristine and Co doped ZnO nanorods of different Co concentrations (5, 10, 15 and 20 at%) were synthesized using a hydrothermal method. The synthesized nanorods were subjected to various characterization methods like X-r...

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Detalles Bibliográficos
Autores principales: Narasimman, S., Balakrishnan, L., Alex, Z. C.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9080562/
https://www.ncbi.nlm.nih.gov/pubmed/35541100
http://dx.doi.org/10.1039/c8ra01803k
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author Narasimman, S.
Balakrishnan, L.
Alex, Z. C.
author_facet Narasimman, S.
Balakrishnan, L.
Alex, Z. C.
author_sort Narasimman, S.
collection PubMed
description A fiber optic magnetic field sensor is proposed and experimentally demonstrated. Pristine and Co doped ZnO nanorods of different Co concentrations (5, 10, 15 and 20 at%) were synthesized using a hydrothermal method. The synthesized nanorods were subjected to various characterization methods like X-ray diffraction (XRD), optical absorption, scanning electron microscopy, energy dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, vibrating sample magnetometry and X-ray photoelectron spectroscopy (XPS). XRD and XPS analysis confirms that the Co ions were successfully incorporated into the Zn site of the wurtzite ZnO lattice without altering the structure. The pristine and Co doped ZnO nanorods showed remarkable changes in the M–H loop where the diamagnetic behavior of ZnO changes to paramagnetic when doped with Co. The sensor structure is composed of cladding modified fiber coated with Co doped ZnO nanorods as a sensing material. The modified cladding is proportionally sensitive to the ambient magnetic field because of the magneto-optic effect. Experimental results revealed that the sensor has an operating magnetic field range from 17 mT to 180 mT and shows a maximum sensitivity of ∼18% for 15 at% Co doped ZnO nanorods. The proposed magnetic field sensor would be attractive due to its low cost fabrication, simplicity of the sensor head preparation, high sensitivity and reproducibility.
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spelling pubmed-90805622022-05-09 Fiber optic magnetic field sensor using Co doped ZnO nanorods as cladding Narasimman, S. Balakrishnan, L. Alex, Z. C. RSC Adv Chemistry A fiber optic magnetic field sensor is proposed and experimentally demonstrated. Pristine and Co doped ZnO nanorods of different Co concentrations (5, 10, 15 and 20 at%) were synthesized using a hydrothermal method. The synthesized nanorods were subjected to various characterization methods like X-ray diffraction (XRD), optical absorption, scanning electron microscopy, energy dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, vibrating sample magnetometry and X-ray photoelectron spectroscopy (XPS). XRD and XPS analysis confirms that the Co ions were successfully incorporated into the Zn site of the wurtzite ZnO lattice without altering the structure. The pristine and Co doped ZnO nanorods showed remarkable changes in the M–H loop where the diamagnetic behavior of ZnO changes to paramagnetic when doped with Co. The sensor structure is composed of cladding modified fiber coated with Co doped ZnO nanorods as a sensing material. The modified cladding is proportionally sensitive to the ambient magnetic field because of the magneto-optic effect. Experimental results revealed that the sensor has an operating magnetic field range from 17 mT to 180 mT and shows a maximum sensitivity of ∼18% for 15 at% Co doped ZnO nanorods. The proposed magnetic field sensor would be attractive due to its low cost fabrication, simplicity of the sensor head preparation, high sensitivity and reproducibility. The Royal Society of Chemistry 2018-05-18 /pmc/articles/PMC9080562/ /pubmed/35541100 http://dx.doi.org/10.1039/c8ra01803k Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/
spellingShingle Chemistry
Narasimman, S.
Balakrishnan, L.
Alex, Z. C.
Fiber optic magnetic field sensor using Co doped ZnO nanorods as cladding
title Fiber optic magnetic field sensor using Co doped ZnO nanorods as cladding
title_full Fiber optic magnetic field sensor using Co doped ZnO nanorods as cladding
title_fullStr Fiber optic magnetic field sensor using Co doped ZnO nanorods as cladding
title_full_unstemmed Fiber optic magnetic field sensor using Co doped ZnO nanorods as cladding
title_short Fiber optic magnetic field sensor using Co doped ZnO nanorods as cladding
title_sort fiber optic magnetic field sensor using co doped zno nanorods as cladding
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9080562/
https://www.ncbi.nlm.nih.gov/pubmed/35541100
http://dx.doi.org/10.1039/c8ra01803k
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