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Size-dependent magnetic and magnetothermal properties of gadolinium silicide nanoparticles

Gadolinium silicide (Gd(5)Si(4)) nanoparticles are an interesting class of materials due to their high magnetization, low Curie temperature, low toxicity in biological environments and their multifunctional properties. We report the magnetic and magnetothermal properties of gadolinium silicide (Gd(5...

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Autores principales: Nauman, Muhammad, Alnasir, Muhammad Hisham, Hamayun, Muhammad Asif, Wang, YiXu, Shatruk, Michael, Manzoor, Sadia
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9055665/
https://www.ncbi.nlm.nih.gov/pubmed/35519110
http://dx.doi.org/10.1039/d0ra05394e
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author Nauman, Muhammad
Alnasir, Muhammad Hisham
Hamayun, Muhammad Asif
Wang, YiXu
Shatruk, Michael
Manzoor, Sadia
author_facet Nauman, Muhammad
Alnasir, Muhammad Hisham
Hamayun, Muhammad Asif
Wang, YiXu
Shatruk, Michael
Manzoor, Sadia
author_sort Nauman, Muhammad
collection PubMed
description Gadolinium silicide (Gd(5)Si(4)) nanoparticles are an interesting class of materials due to their high magnetization, low Curie temperature, low toxicity in biological environments and their multifunctional properties. We report the magnetic and magnetothermal properties of gadolinium silicide (Gd(5)Si(4)) nanoparticles prepared by surfactant-assisted ball milling of arc melted bulk ingots of the compound. Using different milling times and speeds, a wide range of crystallite sizes (13–43 nm) could be produced and a reduction in Curie temperature (T(C)) from 340 K to 317 K was achieved, making these nanoparticles suitable for self-controlled magnetic hyperthermia applications. The magnetothermal effect was measured in applied AC magnetic fields of amplitude 164–239 Oe and frequencies 163–519 kHz. All particles showed magnetic heating with a strong dependence of the specific absorption rate (SAR) on the average crystallite size. The highest SAR of 3.7 W g(−1) was measured for 43 nm sized nanoparticles of Gd(5)Si(4). The high SAR and low T(C), (within the therapeutic range for magnetothermal therapy) makes the Gd(5)Si(4) behave like self-regulating heat switches that would be suitable for self-controlled magnetic hyperthermia applications after biocompatibility and cytotoxicity tests.
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spelling pubmed-90556652022-05-04 Size-dependent magnetic and magnetothermal properties of gadolinium silicide nanoparticles Nauman, Muhammad Alnasir, Muhammad Hisham Hamayun, Muhammad Asif Wang, YiXu Shatruk, Michael Manzoor, Sadia RSC Adv Chemistry Gadolinium silicide (Gd(5)Si(4)) nanoparticles are an interesting class of materials due to their high magnetization, low Curie temperature, low toxicity in biological environments and their multifunctional properties. We report the magnetic and magnetothermal properties of gadolinium silicide (Gd(5)Si(4)) nanoparticles prepared by surfactant-assisted ball milling of arc melted bulk ingots of the compound. Using different milling times and speeds, a wide range of crystallite sizes (13–43 nm) could be produced and a reduction in Curie temperature (T(C)) from 340 K to 317 K was achieved, making these nanoparticles suitable for self-controlled magnetic hyperthermia applications. The magnetothermal effect was measured in applied AC magnetic fields of amplitude 164–239 Oe and frequencies 163–519 kHz. All particles showed magnetic heating with a strong dependence of the specific absorption rate (SAR) on the average crystallite size. The highest SAR of 3.7 W g(−1) was measured for 43 nm sized nanoparticles of Gd(5)Si(4). The high SAR and low T(C), (within the therapeutic range for magnetothermal therapy) makes the Gd(5)Si(4) behave like self-regulating heat switches that would be suitable for self-controlled magnetic hyperthermia applications after biocompatibility and cytotoxicity tests. The Royal Society of Chemistry 2020-07-29 /pmc/articles/PMC9055665/ /pubmed/35519110 http://dx.doi.org/10.1039/d0ra05394e Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Nauman, Muhammad
Alnasir, Muhammad Hisham
Hamayun, Muhammad Asif
Wang, YiXu
Shatruk, Michael
Manzoor, Sadia
Size-dependent magnetic and magnetothermal properties of gadolinium silicide nanoparticles
title Size-dependent magnetic and magnetothermal properties of gadolinium silicide nanoparticles
title_full Size-dependent magnetic and magnetothermal properties of gadolinium silicide nanoparticles
title_fullStr Size-dependent magnetic and magnetothermal properties of gadolinium silicide nanoparticles
title_full_unstemmed Size-dependent magnetic and magnetothermal properties of gadolinium silicide nanoparticles
title_short Size-dependent magnetic and magnetothermal properties of gadolinium silicide nanoparticles
title_sort size-dependent magnetic and magnetothermal properties of gadolinium silicide nanoparticles
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9055665/
https://www.ncbi.nlm.nih.gov/pubmed/35519110
http://dx.doi.org/10.1039/d0ra05394e
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