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Scanning Magnetic Microscope Using a Gradiometric Configuration for Characterization of Rock Samples

Scanning magnetic microscopy is a tool that has been used to map magnetic fields with good spatial resolution and field sensitivity. This technology has great advantages over other instruments; for example, its operation does not require cryogenic technology, which reduces its operational cost and c...

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Autores principales: Araujo, Jefferson F. D. F., Reis, Andre L. A., Correa, Angela A. P., Yokoyama, Elder, Oliveira, Vanderlei C., Mendoza, Leonardo A. F., Pacheco, Marcos A. C., Luz-Lima, Cleanio, Santos, Amanda F., Osorio G., Fredy G., Brito, Giancarlo E., Araujo, Wagner W. R., Tahir, Bruno, Antonio C., Del Rosso, Tommaso
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6947304/
https://www.ncbi.nlm.nih.gov/pubmed/31835752
http://dx.doi.org/10.3390/ma12244154
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author Araujo, Jefferson F. D. F.
Reis, Andre L. A.
Correa, Angela A. P.
Yokoyama, Elder
Oliveira, Vanderlei C.
Mendoza, Leonardo A. F.
Pacheco, Marcos A. C.
Luz-Lima, Cleanio
Santos, Amanda F.
Osorio G., Fredy G.
Brito, Giancarlo E.
Araujo, Wagner W. R.
Tahir,
Bruno, Antonio C.
Del Rosso, Tommaso
author_facet Araujo, Jefferson F. D. F.
Reis, Andre L. A.
Correa, Angela A. P.
Yokoyama, Elder
Oliveira, Vanderlei C.
Mendoza, Leonardo A. F.
Pacheco, Marcos A. C.
Luz-Lima, Cleanio
Santos, Amanda F.
Osorio G., Fredy G.
Brito, Giancarlo E.
Araujo, Wagner W. R.
Tahir,
Bruno, Antonio C.
Del Rosso, Tommaso
author_sort Araujo, Jefferson F. D. F.
collection PubMed
description Scanning magnetic microscopy is a tool that has been used to map magnetic fields with good spatial resolution and field sensitivity. This technology has great advantages over other instruments; for example, its operation does not require cryogenic technology, which reduces its operational cost and complexity. Here, we presented a spatial domain technique based on an equivalent layer approach for processing the data set produced by magnetic microscopy. This approach estimated a magnetic moment distribution over a fictitious layer composed by a set of dipoles located below the observation plane. For this purpose, we formulated a linear inverse problem for calculating the magnetic vector and its amplitude. Vector field maps are valuable tools for the magnetic interpretation of samples with a high spatial variability of magnetization. These maps could provide comprehensive information regarding the spatial distribution of magnetic carriers. In addition, this approach might be useful for characterizing isolated areas over samples or investigating the spatial magnetization distribution of bulk samples at the micro and millimeter scales. This technique could be useful for many applications that require samples that need to be mapped without a magnetic field at room temperature, including rock magnetism.
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spelling pubmed-69473042020-01-13 Scanning Magnetic Microscope Using a Gradiometric Configuration for Characterization of Rock Samples Araujo, Jefferson F. D. F. Reis, Andre L. A. Correa, Angela A. P. Yokoyama, Elder Oliveira, Vanderlei C. Mendoza, Leonardo A. F. Pacheco, Marcos A. C. Luz-Lima, Cleanio Santos, Amanda F. Osorio G., Fredy G. Brito, Giancarlo E. Araujo, Wagner W. R. Tahir, Bruno, Antonio C. Del Rosso, Tommaso Materials (Basel) Article Scanning magnetic microscopy is a tool that has been used to map magnetic fields with good spatial resolution and field sensitivity. This technology has great advantages over other instruments; for example, its operation does not require cryogenic technology, which reduces its operational cost and complexity. Here, we presented a spatial domain technique based on an equivalent layer approach for processing the data set produced by magnetic microscopy. This approach estimated a magnetic moment distribution over a fictitious layer composed by a set of dipoles located below the observation plane. For this purpose, we formulated a linear inverse problem for calculating the magnetic vector and its amplitude. Vector field maps are valuable tools for the magnetic interpretation of samples with a high spatial variability of magnetization. These maps could provide comprehensive information regarding the spatial distribution of magnetic carriers. In addition, this approach might be useful for characterizing isolated areas over samples or investigating the spatial magnetization distribution of bulk samples at the micro and millimeter scales. This technique could be useful for many applications that require samples that need to be mapped without a magnetic field at room temperature, including rock magnetism. MDPI 2019-12-11 /pmc/articles/PMC6947304/ /pubmed/31835752 http://dx.doi.org/10.3390/ma12244154 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
Araujo, Jefferson F. D. F.
Reis, Andre L. A.
Correa, Angela A. P.
Yokoyama, Elder
Oliveira, Vanderlei C.
Mendoza, Leonardo A. F.
Pacheco, Marcos A. C.
Luz-Lima, Cleanio
Santos, Amanda F.
Osorio G., Fredy G.
Brito, Giancarlo E.
Araujo, Wagner W. R.
Tahir,
Bruno, Antonio C.
Del Rosso, Tommaso
Scanning Magnetic Microscope Using a Gradiometric Configuration for Characterization of Rock Samples
title Scanning Magnetic Microscope Using a Gradiometric Configuration for Characterization of Rock Samples
title_full Scanning Magnetic Microscope Using a Gradiometric Configuration for Characterization of Rock Samples
title_fullStr Scanning Magnetic Microscope Using a Gradiometric Configuration for Characterization of Rock Samples
title_full_unstemmed Scanning Magnetic Microscope Using a Gradiometric Configuration for Characterization of Rock Samples
title_short Scanning Magnetic Microscope Using a Gradiometric Configuration for Characterization of Rock Samples
title_sort scanning magnetic microscope using a gradiometric configuration for characterization of rock samples
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6947304/
https://www.ncbi.nlm.nih.gov/pubmed/31835752
http://dx.doi.org/10.3390/ma12244154
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