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Magnetic resonance of the NiFe(2)O(4) nanoparticles in the gigahertz range
We report an adjustable magnetic resonance frequency from 1.45 to 2.54 GHz for NiFe(2)O(4) nanoparticles which were prepared by a sol–gel process. X-ray diffraction and scanning electron microscopy results indicate that the samples are polycrystalline nanoparticles, and the size of the particles inc...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3852539/ https://www.ncbi.nlm.nih.gov/pubmed/24083340 http://dx.doi.org/10.1186/1556-276X-8-404 |
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author | Shi, Zhenhua Zhang, Jing Gao, Daqiang Zhu, Zhonghua Yang, Zhaolong Zhang, Zhipeng Xue, Desheng |
author_facet | Shi, Zhenhua Zhang, Jing Gao, Daqiang Zhu, Zhonghua Yang, Zhaolong Zhang, Zhipeng Xue, Desheng |
author_sort | Shi, Zhenhua |
collection | PubMed |
description | We report an adjustable magnetic resonance frequency from 1.45 to 2.54 GHz for NiFe(2)O(4) nanoparticles which were prepared by a sol–gel process. X-ray diffraction and scanning electron microscopy results indicate that the samples are polycrystalline nanoparticles, and the size of the particles increases obviously with the thermal treatment temperature. The consequence of the surface composition suggests that the oxygen defects are present in the nanoparticle surface, and this surface magnetic state can show a strong surface anisotropy. With decreasing size of the particle, the surface magnetic effect is predominant, resulting in an increase of resonance frequency for NiFe(2)O(4) nanoparticles. This finding provides a new route for NiFe(2)O(4) materials that can be used in the gigahertz range. |
format | Online Article Text |
id | pubmed-3852539 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Springer |
record_format | MEDLINE/PubMed |
spelling | pubmed-38525392013-12-06 Magnetic resonance of the NiFe(2)O(4) nanoparticles in the gigahertz range Shi, Zhenhua Zhang, Jing Gao, Daqiang Zhu, Zhonghua Yang, Zhaolong Zhang, Zhipeng Xue, Desheng Nanoscale Res Lett Nano Express We report an adjustable magnetic resonance frequency from 1.45 to 2.54 GHz for NiFe(2)O(4) nanoparticles which were prepared by a sol–gel process. X-ray diffraction and scanning electron microscopy results indicate that the samples are polycrystalline nanoparticles, and the size of the particles increases obviously with the thermal treatment temperature. The consequence of the surface composition suggests that the oxygen defects are present in the nanoparticle surface, and this surface magnetic state can show a strong surface anisotropy. With decreasing size of the particle, the surface magnetic effect is predominant, resulting in an increase of resonance frequency for NiFe(2)O(4) nanoparticles. This finding provides a new route for NiFe(2)O(4) materials that can be used in the gigahertz range. Springer 2013-10-01 /pmc/articles/PMC3852539/ /pubmed/24083340 http://dx.doi.org/10.1186/1556-276X-8-404 Text en Copyright © 2013 Shi et al.; licensee Springer. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Nano Express Shi, Zhenhua Zhang, Jing Gao, Daqiang Zhu, Zhonghua Yang, Zhaolong Zhang, Zhipeng Xue, Desheng Magnetic resonance of the NiFe(2)O(4) nanoparticles in the gigahertz range |
title | Magnetic resonance of the NiFe(2)O(4) nanoparticles in the gigahertz range |
title_full | Magnetic resonance of the NiFe(2)O(4) nanoparticles in the gigahertz range |
title_fullStr | Magnetic resonance of the NiFe(2)O(4) nanoparticles in the gigahertz range |
title_full_unstemmed | Magnetic resonance of the NiFe(2)O(4) nanoparticles in the gigahertz range |
title_short | Magnetic resonance of the NiFe(2)O(4) nanoparticles in the gigahertz range |
title_sort | magnetic resonance of the nife(2)o(4) nanoparticles in the gigahertz range |
topic | Nano Express |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3852539/ https://www.ncbi.nlm.nih.gov/pubmed/24083340 http://dx.doi.org/10.1186/1556-276X-8-404 |
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