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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...

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Autores principales: Spivakov, Aleksandr, Lin, Chun-Rong, Chang, Yu-Chuan, Wang, Cheng-Chien, Sarychev, Dmitriy
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
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.
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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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