Iron-Nickel Alloy with Starfish-like Shape and Its Unique Magnetic Properties: Effect of Reaction Volume and Metal Concentration on the Synthesized Alloy

Iron-nickel alloy is an example of bimetallic nanostructures magnetic alloy, which receives intensive and significant attention in recent years due to its desirable superior ferromagnetic and mechanical characteristics. In this work, a unique starfish-like shape of an iron-nickel alloy with unique m...

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Autores principales:	Norhan Nady, Noha Salem, Marwa A. A. Mohamed, Sherif H. Kandil
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	starfish-like shape iron–nickel alloy magnetic properties chemical reduction method Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/d2c0b520a19d4c14a28c5918ece6d2c1
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spelling	oai:doaj.org-article:d2c0b520a19d4c14a28c5918ece6d2c12021-11-25T18:31:53ZIron-Nickel Alloy with Starfish-like Shape and Its Unique Magnetic Properties: Effect of Reaction Volume and Metal Concentration on the Synthesized Alloy10.3390/nano111130342079-4991https://doaj.org/article/d2c0b520a19d4c14a28c5918ece6d2c12021-11-01T00:00:00Zhttps://www.mdpi.com/2079-4991/11/11/3034https://doaj.org/toc/2079-4991Iron-nickel alloy is an example of bimetallic nanostructures magnetic alloy, which receives intensive and significant attention in recent years due to its desirable superior ferromagnetic and mechanical characteristics. In this work, a unique starfish-like shape of an iron-nickel alloy with unique magnetic properties was presented using a simple, effective, high purity, and low-cost chemical reduction. There is no report on the synthesis of such novel shape without complex precursors and/or surfactants that increase production costs and introduce impurities, so far. The synthesis of five magnetic iron-nickel alloys with varying iron to nickel molar ratios (10–50% Fe) was undertaken by simultaneously reducing Fe(II) and Ni(II) solution using hydrazine hydrate as a reducing agent in strong alkaline media for 15 min at 95–98 °C. The effect of reaction volume and total metal concentration on the properties of the synthesized alloys was studied. Alloy morphology, chemical composition, crystal structure, thermal stability, and magnetic properties of synthesized iron-nickel alloys were characterized by means of SEM, TEM, EDX, XRD, DSC and VSM. ImageJ software was used to calculate the size of the synthesized alloys. A deviation from Vegard’s law was recorded for iron molar ration higher than 30%., in which superstructure phase of FeNi<sub>3</sub> was formed and the presence of defects in it, as well as the dimensional effects of nanocrystals. The saturation magnetization (Ms), coercivity (Hc), retentivity (Mr), and squareness are strongly affected by the molar ratio of iron and nickel and reaction volume as well as the total metal concentration.Norhan NadyNoha SalemMarwa A. A. MohamedSherif H. KandilMDPI AGarticlestarfish-like shapeiron–nickel alloymagnetic propertieschemical reduction methodChemistryQD1-999ENNanomaterials, Vol 11, Iss 3034, p 3034 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	starfish-like shape iron–nickel alloy magnetic properties chemical reduction method Chemistry QD1-999
spellingShingle	starfish-like shape iron–nickel alloy magnetic properties chemical reduction method Chemistry QD1-999 Norhan Nady Noha Salem Marwa A. A. Mohamed Sherif H. Kandil Iron-Nickel Alloy with Starfish-like Shape and Its Unique Magnetic Properties: Effect of Reaction Volume and Metal Concentration on the Synthesized Alloy
description	Iron-nickel alloy is an example of bimetallic nanostructures magnetic alloy, which receives intensive and significant attention in recent years due to its desirable superior ferromagnetic and mechanical characteristics. In this work, a unique starfish-like shape of an iron-nickel alloy with unique magnetic properties was presented using a simple, effective, high purity, and low-cost chemical reduction. There is no report on the synthesis of such novel shape without complex precursors and/or surfactants that increase production costs and introduce impurities, so far. The synthesis of five magnetic iron-nickel alloys with varying iron to nickel molar ratios (10–50% Fe) was undertaken by simultaneously reducing Fe(II) and Ni(II) solution using hydrazine hydrate as a reducing agent in strong alkaline media for 15 min at 95–98 °C. The effect of reaction volume and total metal concentration on the properties of the synthesized alloys was studied. Alloy morphology, chemical composition, crystal structure, thermal stability, and magnetic properties of synthesized iron-nickel alloys were characterized by means of SEM, TEM, EDX, XRD, DSC and VSM. ImageJ software was used to calculate the size of the synthesized alloys. A deviation from Vegard’s law was recorded for iron molar ration higher than 30%., in which superstructure phase of FeNi<sub>3</sub> was formed and the presence of defects in it, as well as the dimensional effects of nanocrystals. The saturation magnetization (Ms), coercivity (Hc), retentivity (Mr), and squareness are strongly affected by the molar ratio of iron and nickel and reaction volume as well as the total metal concentration.
format	article
author	Norhan Nady Noha Salem Marwa A. A. Mohamed Sherif H. Kandil
author_facet	Norhan Nady Noha Salem Marwa A. A. Mohamed Sherif H. Kandil
author_sort	Norhan Nady
title	Iron-Nickel Alloy with Starfish-like Shape and Its Unique Magnetic Properties: Effect of Reaction Volume and Metal Concentration on the Synthesized Alloy
title_short	Iron-Nickel Alloy with Starfish-like Shape and Its Unique Magnetic Properties: Effect of Reaction Volume and Metal Concentration on the Synthesized Alloy
title_full	Iron-Nickel Alloy with Starfish-like Shape and Its Unique Magnetic Properties: Effect of Reaction Volume and Metal Concentration on the Synthesized Alloy
title_fullStr	Iron-Nickel Alloy with Starfish-like Shape and Its Unique Magnetic Properties: Effect of Reaction Volume and Metal Concentration on the Synthesized Alloy
title_full_unstemmed	Iron-Nickel Alloy with Starfish-like Shape and Its Unique Magnetic Properties: Effect of Reaction Volume and Metal Concentration on the Synthesized Alloy
title_sort	iron-nickel alloy with starfish-like shape and its unique magnetic properties: effect of reaction volume and metal concentration on the synthesized alloy
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/d2c0b520a19d4c14a28c5918ece6d2c1
work_keys_str_mv	AT norhannady ironnickelalloywithstarfishlikeshapeanditsuniquemagneticpropertieseffectofreactionvolumeandmetalconcentrationonthesynthesizedalloy AT nohasalem ironnickelalloywithstarfishlikeshapeanditsuniquemagneticpropertieseffectofreactionvolumeandmetalconcentrationonthesynthesizedalloy AT marwaaamohamed ironnickelalloywithstarfishlikeshapeanditsuniquemagneticpropertieseffectofreactionvolumeandmetalconcentrationonthesynthesizedalloy AT sherifhkandil ironnickelalloywithstarfishlikeshapeanditsuniquemagneticpropertieseffectofreactionvolumeandmetalconcentrationonthesynthesizedalloy
_version_	1718411046624952320

Iron-Nickel Alloy with Starfish-like Shape and Its Unique Magnetic Properties: Effect of Reaction Volume and Metal Concentration on the Synthesized Alloy

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