Self-Limitations of Heat Release in Coupled Core-Shell Spinel Ferrite Nanoparticles: Frequency, Time, and Temperature Dependencies

We explored a series of highly uniform magnetic nanoparticles (MNPs) with a core-shell nanoarchitecture prepared by an efficient solvothermal approach. In our study, we focused on the water dispersion of MNPs based on two different CoFe<sub<2</sub<O<sub<4</sub< core sizes and...
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Autor*in:	Shankar Khanal [verfasserIn] Marco Sanna Angotzi [verfasserIn] Valentina Mameli [verfasserIn] Miroslav Veverka [verfasserIn] Huolin L. Xin [verfasserIn] Carla Cannas [verfasserIn] Jana Vejpravová [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2021

Schlagwörter:	core-shell nanoparticles magnetic fluid hyperthermia frequency dependence time dependence temperature-dependence blocking temperature

Übergeordnetes Werk:	In: Nanomaterials - MDPI AG, 2012, 11(2021), 11, p 2848
Übergeordnetes Werk:	volume:11 ; year:2021 ; number:11, p 2848

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/nano11112848

Katalog-ID:	DOAJ053941535

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520			\|a We explored a series of highly uniform magnetic nanoparticles (MNPs) with a core-shell nanoarchitecture prepared by an efficient solvothermal approach. In our study, we focused on the water dispersion of MNPs based on two different CoFe<sub<2</sub<O<sub<4</sub< core sizes and the chemical nature of the shell (MnFe<sub<2</sub<O<sub<4</sub< and spinel iron oxide). We performed an uncommon systematic investigation of the time and temperature evolution of the adiabatic heat release at different frequencies of the alternating magnetic field (AMF). Our systematic study elucidates the nontrivial variations in the heating efficiency of core-shell MNPs concerning their structural, magnetic, and morphological properties. In addition, we identified anomalies in the temperature and frequency dependencies of the specific power absorption (SPA). We conclude that after the initial heating phase, the heat release is governed by the competition of the Brown and Néel mechanism. In addition, we demonstrated that a rational parameter sufficiently mirroring the heating ability is the mean magnetic moment per MNP. Our study, thus, paves the road to fine control of the AMF-induced heating by MNPs with fine-tuned structural, chemical, and magnetic parameters. Importantly, we claim that the nontrivial variations of the SPA with the temperature must be considered, e.g., in the emerging concept of MF-assisted catalysis, where the temperature profile influences the undergoing chemical reactions.
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language	English
source	In Nanomaterials 11(2021), 11, p 2848 volume:11 year:2021 number:11, p 2848
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authorswithroles_txt_mv	Shankar Khanal @@aut@@ Marco Sanna Angotzi @@aut@@ Valentina Mameli @@aut@@ Miroslav Veverka @@aut@@ Huolin L. Xin @@aut@@ Carla Cannas @@aut@@ Jana Vejpravová @@aut@@
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callnumber-first	Q - Science
author	Shankar Khanal
spellingShingle	Shankar Khanal misc QD1-999 misc core-shell nanoparticles misc magnetic fluid hyperthermia misc frequency dependence misc time dependence misc temperature-dependence misc blocking temperature misc Chemistry Self-Limitations of Heat Release in Coupled Core-Shell Spinel Ferrite Nanoparticles: Frequency, Time, and Temperature Dependencies
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topic_title	QD1-999 Self-Limitations of Heat Release in Coupled Core-Shell Spinel Ferrite Nanoparticles: Frequency, Time, and Temperature Dependencies core-shell nanoparticles magnetic fluid hyperthermia frequency dependence time dependence temperature-dependence blocking temperature
topic	misc QD1-999 misc core-shell nanoparticles misc magnetic fluid hyperthermia misc frequency dependence misc time dependence misc temperature-dependence misc blocking temperature misc Chemistry
topic_unstemmed	misc QD1-999 misc core-shell nanoparticles misc magnetic fluid hyperthermia misc frequency dependence misc time dependence misc temperature-dependence misc blocking temperature misc Chemistry
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title	Self-Limitations of Heat Release in Coupled Core-Shell Spinel Ferrite Nanoparticles: Frequency, Time, and Temperature Dependencies
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title_full	Self-Limitations of Heat Release in Coupled Core-Shell Spinel Ferrite Nanoparticles: Frequency, Time, and Temperature Dependencies
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title_sort	self-limitations of heat release in coupled core-shell spinel ferrite nanoparticles: frequency, time, and temperature dependencies
callnumber	QD1-999
title_auth	Self-Limitations of Heat Release in Coupled Core-Shell Spinel Ferrite Nanoparticles: Frequency, Time, and Temperature Dependencies
abstract	We explored a series of highly uniform magnetic nanoparticles (MNPs) with a core-shell nanoarchitecture prepared by an efficient solvothermal approach. In our study, we focused on the water dispersion of MNPs based on two different CoFe<sub<2</sub<O<sub<4</sub< core sizes and the chemical nature of the shell (MnFe<sub<2</sub<O<sub<4</sub< and spinel iron oxide). We performed an uncommon systematic investigation of the time and temperature evolution of the adiabatic heat release at different frequencies of the alternating magnetic field (AMF). Our systematic study elucidates the nontrivial variations in the heating efficiency of core-shell MNPs concerning their structural, magnetic, and morphological properties. In addition, we identified anomalies in the temperature and frequency dependencies of the specific power absorption (SPA). We conclude that after the initial heating phase, the heat release is governed by the competition of the Brown and Néel mechanism. In addition, we demonstrated that a rational parameter sufficiently mirroring the heating ability is the mean magnetic moment per MNP. Our study, thus, paves the road to fine control of the AMF-induced heating by MNPs with fine-tuned structural, chemical, and magnetic parameters. Importantly, we claim that the nontrivial variations of the SPA with the temperature must be considered, e.g., in the emerging concept of MF-assisted catalysis, where the temperature profile influences the undergoing chemical reactions.
abstractGer	We explored a series of highly uniform magnetic nanoparticles (MNPs) with a core-shell nanoarchitecture prepared by an efficient solvothermal approach. In our study, we focused on the water dispersion of MNPs based on two different CoFe<sub<2</sub<O<sub<4</sub< core sizes and the chemical nature of the shell (MnFe<sub<2</sub<O<sub<4</sub< and spinel iron oxide). We performed an uncommon systematic investigation of the time and temperature evolution of the adiabatic heat release at different frequencies of the alternating magnetic field (AMF). Our systematic study elucidates the nontrivial variations in the heating efficiency of core-shell MNPs concerning their structural, magnetic, and morphological properties. In addition, we identified anomalies in the temperature and frequency dependencies of the specific power absorption (SPA). We conclude that after the initial heating phase, the heat release is governed by the competition of the Brown and Néel mechanism. In addition, we demonstrated that a rational parameter sufficiently mirroring the heating ability is the mean magnetic moment per MNP. Our study, thus, paves the road to fine control of the AMF-induced heating by MNPs with fine-tuned structural, chemical, and magnetic parameters. Importantly, we claim that the nontrivial variations of the SPA with the temperature must be considered, e.g., in the emerging concept of MF-assisted catalysis, where the temperature profile influences the undergoing chemical reactions.
abstract_unstemmed	We explored a series of highly uniform magnetic nanoparticles (MNPs) with a core-shell nanoarchitecture prepared by an efficient solvothermal approach. In our study, we focused on the water dispersion of MNPs based on two different CoFe<sub<2</sub<O<sub<4</sub< core sizes and the chemical nature of the shell (MnFe<sub<2</sub<O<sub<4</sub< and spinel iron oxide). We performed an uncommon systematic investigation of the time and temperature evolution of the adiabatic heat release at different frequencies of the alternating magnetic field (AMF). Our systematic study elucidates the nontrivial variations in the heating efficiency of core-shell MNPs concerning their structural, magnetic, and morphological properties. In addition, we identified anomalies in the temperature and frequency dependencies of the specific power absorption (SPA). We conclude that after the initial heating phase, the heat release is governed by the competition of the Brown and Néel mechanism. In addition, we demonstrated that a rational parameter sufficiently mirroring the heating ability is the mean magnetic moment per MNP. Our study, thus, paves the road to fine control of the AMF-induced heating by MNPs with fine-tuned structural, chemical, and magnetic parameters. Importantly, we claim that the nontrivial variations of the SPA with the temperature must be considered, e.g., in the emerging concept of MF-assisted catalysis, where the temperature profile influences the undergoing chemical reactions.
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title_short	Self-Limitations of Heat Release in Coupled Core-Shell Spinel Ferrite Nanoparticles: Frequency, Time, and Temperature Dependencies
url	https://doi.org/10.3390/nano11112848 https://doaj.org/article/7182d4a3ff084a8eaf4e5c1cab835dc6 https://www.mdpi.com/2079-4991/11/11/2848 https://doaj.org/toc/2079-4991
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author2	Marco Sanna Angotzi Valentina Mameli Miroslav Veverka Huolin L. Xin Carla Cannas Jana Vejpravová
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up_date	2024-07-03T20:25:56.618Z
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Our study, thus, paves the road to fine control of the AMF-induced heating by MNPs with fine-tuned structural, chemical, and magnetic parameters. 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Self-Limitations of Heat Release in Coupled Core-Shell Spinel Ferrite Nanoparticles: Frequency, Time, and Temperature Dependencies

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