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Magnetic and Magneto-Optical Oroperties of Iron Oxides Nanoparticles Synthesized under Atmospheric Pressure
Magnetite nanoparticles were synthesized by a simple thermal decomposition process, involving only iron (III) nitrate nonahydrate as a precursor, and hexadecylamine as a solvent and stabilizer at reaction temperatures varied from 200 to 380 °C. The results of the structural analysis showed that the...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7559331/ https://www.ncbi.nlm.nih.gov/pubmed/32967130 http://dx.doi.org/10.3390/nano10091888 |
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author | Spivakov, Aleksandr Lin, Chun-Rong Chang, Yu-Chuan Wang, Cheng-Chien Sarychev, Dmitriy |
author_facet | Spivakov, Aleksandr Lin, Chun-Rong Chang, Yu-Chuan Wang, Cheng-Chien Sarychev, Dmitriy |
author_sort | Spivakov, Aleksandr |
collection | PubMed |
description | Magnetite nanoparticles were synthesized by a simple thermal decomposition process, involving only iron (III) nitrate nonahydrate as a precursor, and hexadecylamine as a solvent and stabilizer at reaction temperatures varied from 200 to 380 °C. The results of the structural analysis showed that the average crystallite size depends on the reaction temperature and increases from 4.8 to 13.3 nm. The behavior of the coercivity indicates that all synthesized samples are single domain; herewith, it was found that the critical size corresponding to the transition to the superparamagnetic state at room temperature is about 9 nm. The effect of the reaction temperature on changes in the saturation magnetization was studied. It was found that the size effect in the MCD spectra is observed for the IVCT transition and one ISCT transition, and the influence of the reaction temperature on the change in the MCD spectra was discussed. |
format | Online Article Text |
id | pubmed-7559331 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-75593312020-10-29 Magnetic and Magneto-Optical Oroperties of Iron Oxides Nanoparticles Synthesized under Atmospheric Pressure Spivakov, Aleksandr Lin, Chun-Rong Chang, Yu-Chuan Wang, Cheng-Chien Sarychev, Dmitriy Nanomaterials (Basel) Article Magnetite nanoparticles were synthesized by a simple thermal decomposition process, involving only iron (III) nitrate nonahydrate as a precursor, and hexadecylamine as a solvent and stabilizer at reaction temperatures varied from 200 to 380 °C. The results of the structural analysis showed that the average crystallite size depends on the reaction temperature and increases from 4.8 to 13.3 nm. The behavior of the coercivity indicates that all synthesized samples are single domain; herewith, it was found that the critical size corresponding to the transition to the superparamagnetic state at room temperature is about 9 nm. The effect of the reaction temperature on changes in the saturation magnetization was studied. It was found that the size effect in the MCD spectra is observed for the IVCT transition and one ISCT transition, and the influence of the reaction temperature on the change in the MCD spectra was discussed. MDPI 2020-09-21 /pmc/articles/PMC7559331/ /pubmed/32967130 http://dx.doi.org/10.3390/nano10091888 Text en © 2020 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 Spivakov, Aleksandr Lin, Chun-Rong Chang, Yu-Chuan Wang, Cheng-Chien Sarychev, Dmitriy Magnetic and Magneto-Optical Oroperties of Iron Oxides Nanoparticles Synthesized under Atmospheric Pressure |
title | Magnetic and Magneto-Optical Oroperties of Iron Oxides Nanoparticles Synthesized under Atmospheric Pressure |
title_full | Magnetic and Magneto-Optical Oroperties of Iron Oxides Nanoparticles Synthesized under Atmospheric Pressure |
title_fullStr | Magnetic and Magneto-Optical Oroperties of Iron Oxides Nanoparticles Synthesized under Atmospheric Pressure |
title_full_unstemmed | Magnetic and Magneto-Optical Oroperties of Iron Oxides Nanoparticles Synthesized under Atmospheric Pressure |
title_short | Magnetic and Magneto-Optical Oroperties of Iron Oxides Nanoparticles Synthesized under Atmospheric Pressure |
title_sort | magnetic and magneto-optical oroperties of iron oxides nanoparticles synthesized under atmospheric pressure |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7559331/ https://www.ncbi.nlm.nih.gov/pubmed/32967130 http://dx.doi.org/10.3390/nano10091888 |
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