Effect of heat-treatment temperature and zinc addition on magnetostructural and surface properties of manganese nanoferrite prepared by an ecofriendly sol–gel synthesis

ZnxMn1-xFe2O4@SiO2 nanocomposites (NCs) (x = 0.00, 0.25, 0.50, 0.75, 1.00) were prepared by eco-friendly sol–gel synthesis followed by heat treatment at different temperatures and characterized. The X-ray diffraction shows poorly crystallized ferrite after the heat treatment at low temperatures and...

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Autores principales:	Thomas Dippong, Iosif Grigore Deac, Mihaela Diana Lazar, Ioan Petean, Erika Andrea Levei, Gheorghe Borodi, Oana Cadar
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Zinc-manganese ferrite Structural properties Porosity Surface Magnetic properties Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/b2d094eac9c24b80a4ef47ae5d20b99d
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spelling	oai:doaj.org-article:b2d094eac9c24b80a4ef47ae5d20b99d2021-12-04T04:34:27ZEffect of heat-treatment temperature and zinc addition on magnetostructural and surface properties of manganese nanoferrite prepared by an ecofriendly sol–gel synthesis2238-785410.1016/j.jmrt.2021.11.073https://doaj.org/article/b2d094eac9c24b80a4ef47ae5d20b99d2021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2238785421013521https://doaj.org/toc/2238-7854ZnxMn1-xFe2O4@SiO2 nanocomposites (NCs) (x = 0.00, 0.25, 0.50, 0.75, 1.00) were prepared by eco-friendly sol–gel synthesis followed by heat treatment at different temperatures and characterized. The X-ray diffraction shows poorly crystallized ferrite after the heat treatment at low temperatures and highly crystalline ferrite accompanied by several secondary phases at high temperatures. The crystallite size increases from 2.4 to 45.2 nm with the increase of heat treatment temperature. The specific surface decreases from 281 to 13 m2/g with the increase of the heat treatment temperature, reaching values below 1 m2/g at 1200 °C. All NCs have pores within the mesoporous range, with high dispersion of pores’ sizes. The NCs show ferrimagnetic behavior, close to the superparamagentic limit. The main magnetic parameters, saturation magnetization, remanence, coercivity and magnetic anisotropy constant of ZnxMn1-xFe2O4@SiO2 nanoparticles increase with the increase of particle size and heat treatment temperature and decrease with increase of Zn content. This behavior could be explained presuming that the Zn2+, Mn2+ and Fe3+ ions can simultaneously occupy both the tetrahedral and octahedral sites in the ZnxMn1-xFe2O4 ferrite.Thomas DippongIosif Grigore DeacMihaela Diana LazarIoan PeteanErika Andrea LeveiGheorghe BorodiOana CadarElsevierarticleZinc-manganese ferriteStructural propertiesPorositySurfaceMagnetic propertiesMining engineering. MetallurgyTN1-997ENJournal of Materials Research and Technology, Vol 15, Iss , Pp 6528-6540 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Zinc-manganese ferrite Structural properties Porosity Surface Magnetic properties Mining engineering. Metallurgy TN1-997
spellingShingle	Zinc-manganese ferrite Structural properties Porosity Surface Magnetic properties Mining engineering. Metallurgy TN1-997 Thomas Dippong Iosif Grigore Deac Mihaela Diana Lazar Ioan Petean Erika Andrea Levei Gheorghe Borodi Oana Cadar Effect of heat-treatment temperature and zinc addition on magnetostructural and surface properties of manganese nanoferrite prepared by an ecofriendly sol–gel synthesis
description	ZnxMn1-xFe2O4@SiO2 nanocomposites (NCs) (x = 0.00, 0.25, 0.50, 0.75, 1.00) were prepared by eco-friendly sol–gel synthesis followed by heat treatment at different temperatures and characterized. The X-ray diffraction shows poorly crystallized ferrite after the heat treatment at low temperatures and highly crystalline ferrite accompanied by several secondary phases at high temperatures. The crystallite size increases from 2.4 to 45.2 nm with the increase of heat treatment temperature. The specific surface decreases from 281 to 13 m2/g with the increase of the heat treatment temperature, reaching values below 1 m2/g at 1200 °C. All NCs have pores within the mesoporous range, with high dispersion of pores’ sizes. The NCs show ferrimagnetic behavior, close to the superparamagentic limit. The main magnetic parameters, saturation magnetization, remanence, coercivity and magnetic anisotropy constant of ZnxMn1-xFe2O4@SiO2 nanoparticles increase with the increase of particle size and heat treatment temperature and decrease with increase of Zn content. This behavior could be explained presuming that the Zn2+, Mn2+ and Fe3+ ions can simultaneously occupy both the tetrahedral and octahedral sites in the ZnxMn1-xFe2O4 ferrite.
format	article
author	Thomas Dippong Iosif Grigore Deac Mihaela Diana Lazar Ioan Petean Erika Andrea Levei Gheorghe Borodi Oana Cadar
author_facet	Thomas Dippong Iosif Grigore Deac Mihaela Diana Lazar Ioan Petean Erika Andrea Levei Gheorghe Borodi Oana Cadar
author_sort	Thomas Dippong
title	Effect of heat-treatment temperature and zinc addition on magnetostructural and surface properties of manganese nanoferrite prepared by an ecofriendly sol–gel synthesis
title_short	Effect of heat-treatment temperature and zinc addition on magnetostructural and surface properties of manganese nanoferrite prepared by an ecofriendly sol–gel synthesis
title_full	Effect of heat-treatment temperature and zinc addition on magnetostructural and surface properties of manganese nanoferrite prepared by an ecofriendly sol–gel synthesis
title_fullStr	Effect of heat-treatment temperature and zinc addition on magnetostructural and surface properties of manganese nanoferrite prepared by an ecofriendly sol–gel synthesis
title_full_unstemmed	Effect of heat-treatment temperature and zinc addition on magnetostructural and surface properties of manganese nanoferrite prepared by an ecofriendly sol–gel synthesis
title_sort	effect of heat-treatment temperature and zinc addition on magnetostructural and surface properties of manganese nanoferrite prepared by an ecofriendly sol–gel synthesis
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/b2d094eac9c24b80a4ef47ae5d20b99d
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Effect of heat-treatment temperature and zinc addition on magnetostructural and surface properties of manganese nanoferrite prepared by an ecofriendly sol–gel synthesis

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