Micromagnetic Determination of the FORC Response of Paleomagnetically Significant Magnetite Assemblages
Fil: Nagy, Lesleis. University of Liverpool. Department of Earth, Ocean and Ecological Sciences; United Kingdom.
| Main Authors: | , , , , , , |
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| Format: | info:eu-repo/semantics/publishedVersion |
| Language: | eng |
| Published: |
2024
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| Online Access: | http://hdl.handle.net/11086/554095 https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2024GC011465 https://doi.org/10.1029/2024GC011465 |
| _version_ | 1825132241741676544 |
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| author | Nagy, Lesleis Moreno, Roberto Muxworthy, Adrian R. Williams, Wyn Paterson, Greig A. Tauxe, Lisa Valdez‐Grijalva, Miguel A. |
| author2 | orcid.org/0000-0002-5104-7680 |
| author_facet | orcid.org/0000-0002-5104-7680 Nagy, Lesleis Moreno, Roberto Muxworthy, Adrian R. Williams, Wyn Paterson, Greig A. Tauxe, Lisa Valdez‐Grijalva, Miguel A. |
| author_sort | Nagy, Lesleis |
| collection | Repositorio Digital Universitario |
| description | Fil: Nagy, Lesleis. University of Liverpool. Department of Earth, Ocean and Ecological Sciences; United Kingdom. |
| format | info:eu-repo/semantics/publishedVersion |
| id | rdu-unc.554095 |
| institution | Universidad Nacional de Cordoba |
| language | eng |
| publishDate | 2024 |
| record_format | dspace |
| spelling | rdu-unc.5540952024-10-29T06:39:05Z Micromagnetic Determination of the FORC Response of Paleomagnetically Significant Magnetite Assemblages Nagy, Lesleis Moreno, Roberto Muxworthy, Adrian R. Williams, Wyn Paterson, Greig A. Tauxe, Lisa Valdez‐Grijalva, Miguel A. orcid.org/0000-0002-5104-7680 orcid.org/0000-0002-9799-4210 orcid.org/0000-0002-3070-4477 orcid.org/0000-0001-9210-7574 orcid.org/0000-0002-6864-7420 orcid.org/0000-0002-4837-8200 First‐order reversalcurve Magnetite Single‐vortex particles FORC info:eu-repo/semantics/publishedVersion Fil: Nagy, Lesleis. University of Liverpool. Department of Earth, Ocean and Ecological Sciences; United Kingdom. Fil: Moreno, Roberto. University of Edinburgh. School of GeoSciences; United Kingdom. Fil: Moreno, Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Física Enrique Gaviola; Argentina. Fil: Muxworthy, Adrian R. Imperial College London. Department of Earth Science and Engineering; United Kingdom. Fil: Muxworthy, Adrian R. University College London. Department of Earth Sciences; United Kingdom. Fil: Williams, Wyn. University of Edinburgh. School of GeoSciences; United Kingdom. Fil: Paterson, Greig A. University of Liverpool. Department of Earth, Ocean and Ecological Sciences; United Kingdom. Fil: Tauxe, Lisa. University of California San Diego. Scripps Institution of Oceanography; United States of America. Fil: Valdez‐Grijalva, Miguel A. Instituto Mexicano del Petróleo; México. Micromagnetic modeling allows the systematic study of the effects of particle size and shape onthe first‐order reversal curve (FORC) magnetic hysteresis response for magnetite particles in the single‐domain(SD) and pseudo‐single domain (PSD) particle size range. The interpretation of FORCs, though widely used,has been highly subjective. Here, we use micromagnetics to model randomly oriented distributions of particlesto allow more physically meaningful interpretations. We show that one commonly found type of PSD particle—namely the single vortex (SV) particle—has far more complex signals than SD particles, with multiple peaksand troughs in the FORC distribution, where the peaks have higher switching fields for larger SV particles.Particles in the SD to SV transition zone have the lowest switching fields. Symmetrical and prolate particlesdisplay similar behavior, with distinctive peaks forming near the vertical axis of the FORC diagram. In contrast,highly oblate particles produce “butterfly” structures, suggesting that these are potentially diagnostic of particlemorphology. We also consider FORC diagrams for distributions of particle sizes and shapes and produce anonline application that users can use to build their own FORC distributions. There is good agreement betweenthe model predictions for distributions of particle sizes and shapes, and the published experimental literature. info:eu-repo/semantics/publishedVersion Fil: Nagy, Lesleis. University of Liverpool. Department of Earth, Ocean and Ecological Sciences; United Kingdom. Fil: Moreno, Roberto. University of Edinburgh. School of GeoSciences; United Kingdom. Fil: Moreno, Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Física Enrique Gaviola; Argentina. Fil: Muxworthy, Adrian R. Imperial College London. Department of Earth Science and Engineering; United Kingdom. Fil: Muxworthy, Adrian R. University College London. Department of Earth Sciences; United Kingdom. Fil: Williams, Wyn. University of Edinburgh. School of GeoSciences; United Kingdom. Fil: Paterson, Greig A. University of Liverpool. Department of Earth, Ocean and Ecological Sciences; United Kingdom. Fil: Tauxe, Lisa. University of California San Diego. Scripps Institution of Oceanography; United States of America. Fil: Valdez‐Grijalva, Miguel A. Instituto Mexicano del Petróleo; México. 2024-10-28T19:38:04Z 2024-10-28T19:38:04Z 2024-07-25 article Nagy, L., Moreno, R., Muxworthy, A. R., Williams, W., Paterson, G. A., Tauxe, L., & Valdez-Grijalva, M. A. (2024). Micromagnetic determination of the FORC response of paleomagnetically significant magnetite assemblages. Geochemistry, Geophysics, Geosystems, 25, e2024GC011465. https://doi.org/10.1029/2024GC011465 15252027 http://hdl.handle.net/11086/554095 https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2024GC011465 https://doi.org/10.1029/2024GC011465 eng Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ |
| spellingShingle | First‐order reversalcurve Magnetite Single‐vortex particles FORC Nagy, Lesleis Moreno, Roberto Muxworthy, Adrian R. Williams, Wyn Paterson, Greig A. Tauxe, Lisa Valdez‐Grijalva, Miguel A. Micromagnetic Determination of the FORC Response of Paleomagnetically Significant Magnetite Assemblages |
| title | Micromagnetic Determination of the FORC Response of Paleomagnetically Significant Magnetite Assemblages |
| title_full | Micromagnetic Determination of the FORC Response of Paleomagnetically Significant Magnetite Assemblages |
| title_fullStr | Micromagnetic Determination of the FORC Response of Paleomagnetically Significant Magnetite Assemblages |
| title_full_unstemmed | Micromagnetic Determination of the FORC Response of Paleomagnetically Significant Magnetite Assemblages |
| title_short | Micromagnetic Determination of the FORC Response of Paleomagnetically Significant Magnetite Assemblages |
| title_sort | micromagnetic determination of the forc response of paleomagnetically significant magnetite assemblages |
| topic | First‐order reversalcurve Magnetite Single‐vortex particles FORC |
| url | http://hdl.handle.net/11086/554095 https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2024GC011465 https://doi.org/10.1029/2024GC011465 |
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