Cargando…
Sol-Gel Synthesis, Structure, Morphology and Magnetic Properties of Ni(0.6)Mn(0.4)Fe(2)O(4) Nanoparticles Embedded in SiO(2) Matrix
The structure, morphology and magnetic properties of (Ni(0.6)Mn(0.4)Fe(2)O(4))(α)(SiO(2))(100−α) (α = 0–100%) nanocomposites (NCs) produced by sol-gel synthesis were investigated using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), atomic force microscopy (AFM) and vibrati...
Autores principales: | , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8708454/ https://www.ncbi.nlm.nih.gov/pubmed/34947806 http://dx.doi.org/10.3390/nano11123455 |
_version_ | 1784622689040728064 |
---|---|
author | Dippong, Thomas Levei, Erika Andrea Deac, Iosif Grigore Petean, Ioan Borodi, Gheorghe Cadar, Oana |
author_facet | Dippong, Thomas Levei, Erika Andrea Deac, Iosif Grigore Petean, Ioan Borodi, Gheorghe Cadar, Oana |
author_sort | Dippong, Thomas |
collection | PubMed |
description | The structure, morphology and magnetic properties of (Ni(0.6)Mn(0.4)Fe(2)O(4))(α)(SiO(2))(100−α) (α = 0–100%) nanocomposites (NCs) produced by sol-gel synthesis were investigated using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), atomic force microscopy (AFM) and vibrating sample magnetometry (VSM). At low calcination temperatures (300 °C), poorly crystallized Ni(0.6)Mn(0.4)Fe(2)O(4), while at high calcination temperatures, well-crystallized Ni(0.6)Mn(0.4)Fe(2)O(4) was obtained along with α-Fe(2)O(3), quartz, cristobalite or iron silicate secondary phase, depending on the Ni(0.6)Mn(0.4)Fe(2)O(4) content in the NCs. The average crystallite size increases from 2.6 to 74.5 nm with the increase of calcination temperature and ferrite content embedded in the SiO(2) matrix. The saturation magnetization (Ms) enhances from 2.5 to 80.5 emu/g, the remanent magnetization (M(R)) from 0.68 to 12.6 emu/g and the coercive field (H(C)) from 126 to 260 Oe with increasing of Ni(0.6)Mn(0.4)Fe(2)O(4) content in the NCs. The SiO(2) matrix has a diamagnetic behavior with a minor ferromagnetic fraction, Ni(0.6)Mn(0.4)Fe(2)O(4) embedded in SiO(2) matrix displays superparamagnetic behavior, while unembedded Ni(0.6)Mn(0.4)Fe(2)O(4) has a high-quality ferromagnetic behavior. |
format | Online Article Text |
id | pubmed-8708454 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-87084542021-12-25 Sol-Gel Synthesis, Structure, Morphology and Magnetic Properties of Ni(0.6)Mn(0.4)Fe(2)O(4) Nanoparticles Embedded in SiO(2) Matrix Dippong, Thomas Levei, Erika Andrea Deac, Iosif Grigore Petean, Ioan Borodi, Gheorghe Cadar, Oana Nanomaterials (Basel) Article The structure, morphology and magnetic properties of (Ni(0.6)Mn(0.4)Fe(2)O(4))(α)(SiO(2))(100−α) (α = 0–100%) nanocomposites (NCs) produced by sol-gel synthesis were investigated using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), atomic force microscopy (AFM) and vibrating sample magnetometry (VSM). At low calcination temperatures (300 °C), poorly crystallized Ni(0.6)Mn(0.4)Fe(2)O(4), while at high calcination temperatures, well-crystallized Ni(0.6)Mn(0.4)Fe(2)O(4) was obtained along with α-Fe(2)O(3), quartz, cristobalite or iron silicate secondary phase, depending on the Ni(0.6)Mn(0.4)Fe(2)O(4) content in the NCs. The average crystallite size increases from 2.6 to 74.5 nm with the increase of calcination temperature and ferrite content embedded in the SiO(2) matrix. The saturation magnetization (Ms) enhances from 2.5 to 80.5 emu/g, the remanent magnetization (M(R)) from 0.68 to 12.6 emu/g and the coercive field (H(C)) from 126 to 260 Oe with increasing of Ni(0.6)Mn(0.4)Fe(2)O(4) content in the NCs. The SiO(2) matrix has a diamagnetic behavior with a minor ferromagnetic fraction, Ni(0.6)Mn(0.4)Fe(2)O(4) embedded in SiO(2) matrix displays superparamagnetic behavior, while unembedded Ni(0.6)Mn(0.4)Fe(2)O(4) has a high-quality ferromagnetic behavior. MDPI 2021-12-20 /pmc/articles/PMC8708454/ /pubmed/34947806 http://dx.doi.org/10.3390/nano11123455 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Dippong, Thomas Levei, Erika Andrea Deac, Iosif Grigore Petean, Ioan Borodi, Gheorghe Cadar, Oana Sol-Gel Synthesis, Structure, Morphology and Magnetic Properties of Ni(0.6)Mn(0.4)Fe(2)O(4) Nanoparticles Embedded in SiO(2) Matrix |
title | Sol-Gel Synthesis, Structure, Morphology and Magnetic Properties of Ni(0.6)Mn(0.4)Fe(2)O(4) Nanoparticles Embedded in SiO(2) Matrix |
title_full | Sol-Gel Synthesis, Structure, Morphology and Magnetic Properties of Ni(0.6)Mn(0.4)Fe(2)O(4) Nanoparticles Embedded in SiO(2) Matrix |
title_fullStr | Sol-Gel Synthesis, Structure, Morphology and Magnetic Properties of Ni(0.6)Mn(0.4)Fe(2)O(4) Nanoparticles Embedded in SiO(2) Matrix |
title_full_unstemmed | Sol-Gel Synthesis, Structure, Morphology and Magnetic Properties of Ni(0.6)Mn(0.4)Fe(2)O(4) Nanoparticles Embedded in SiO(2) Matrix |
title_short | Sol-Gel Synthesis, Structure, Morphology and Magnetic Properties of Ni(0.6)Mn(0.4)Fe(2)O(4) Nanoparticles Embedded in SiO(2) Matrix |
title_sort | sol-gel synthesis, structure, morphology and magnetic properties of ni(0.6)mn(0.4)fe(2)o(4) nanoparticles embedded in sio(2) matrix |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8708454/ https://www.ncbi.nlm.nih.gov/pubmed/34947806 http://dx.doi.org/10.3390/nano11123455 |
work_keys_str_mv | AT dippongthomas solgelsynthesisstructuremorphologyandmagneticpropertiesofni06mn04fe2o4nanoparticlesembeddedinsio2matrix AT leveierikaandrea solgelsynthesisstructuremorphologyandmagneticpropertiesofni06mn04fe2o4nanoparticlesembeddedinsio2matrix AT deaciosifgrigore solgelsynthesisstructuremorphologyandmagneticpropertiesofni06mn04fe2o4nanoparticlesembeddedinsio2matrix AT peteanioan solgelsynthesisstructuremorphologyandmagneticpropertiesofni06mn04fe2o4nanoparticlesembeddedinsio2matrix AT borodigheorghe solgelsynthesisstructuremorphologyandmagneticpropertiesofni06mn04fe2o4nanoparticlesembeddedinsio2matrix AT cadaroana solgelsynthesisstructuremorphologyandmagneticpropertiesofni06mn04fe2o4nanoparticlesembeddedinsio2matrix |