Development of Ferromagnetic Materials Containing Co<sub>2</sub>P, Fe<sub>2</sub>P Phases from Organometallic Dendrimers Precursors

The development of synthesis methods to access advanced materials, such as magnetic materials that combine multimetallic phosphide phases, remains a worthy research challenge. The most widely used strategies for the synthesis of magnetic transition metal phosphides (TMPs) are organometallic approach...

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Autores principales:	Alaa S. Abd-El-Aziz, Maysun R. Benaaisha, Mohammed S. M. Abdelbaky, David Martinez-Blanco, Santiago García-Granda, Amani A. Abdelghani, Laila H. Abdel-Rahman, Rabin Bissessur
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	cobalt-containing organoiron dendrimer transition metal phosphides ferromagnetic materials Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/745c7e50ab8f44928bc2b835833ea9f7
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spelling	oai:doaj.org-article:745c7e50ab8f44928bc2b835833ea9f72021-11-11T18:40:07ZDevelopment of Ferromagnetic Materials Containing Co<sub>2</sub>P, Fe<sub>2</sub>P Phases from Organometallic Dendrimers Precursors10.3390/molecules262167321420-3049https://doaj.org/article/745c7e50ab8f44928bc2b835833ea9f72021-11-01T00:00:00Zhttps://www.mdpi.com/1420-3049/26/21/6732https://doaj.org/toc/1420-3049The development of synthesis methods to access advanced materials, such as magnetic materials that combine multimetallic phosphide phases, remains a worthy research challenge. The most widely used strategies for the synthesis of magnetic transition metal phosphides (TMPs) are organometallic approaches. In this study, Fe-containing homometallic dendrimers and Fe/Co-containing heterometallic dendrimers were used to synthesize magnetic materials containing multimetallic phosphide phases. The crystalline nature of the nearly aggregated particles was indicated for both designed magnetic samples. In contrast to heterometallic samples, homometallic samples showed dendritic effects on their magnetic properties. Specifically, saturation magnetization (<i>M<sub>s</sub></i>) and coercivity (<i>H<sub>c</sub></i>) decrease as dendritic generation increases. Incorporating cobalt into the homometallic dendrimers to prepare the heterometallic dendrimers markedly increases the magnetic properties of the magnetic materials from 60 to 75 emu/g. Ferromagnetism in homometallic and heterometallic particles shows different responses to temperature changes. For example, heterometallic samples were less sensitive to temperature changes due to the presence of Co<sub>2</sub>P in contrast to the homometallic ones, which show an abrupt change in their slopes at a temperature close to 209 K, which appears to be related to the Fe<sub>2</sub>P ratios. This study presents dendrimers as a new type of precursor for the assembly of magnetic materials containing a mixture of iron- and cobalt-phosphides phases with tunable magnetism, and provides an opportunity to understand magnetism in such materials.Alaa S. Abd-El-AzizMaysun R. BenaaishaMohammed S. M. AbdelbakyDavid Martinez-BlancoSantiago García-GrandaAmani A. AbdelghaniLaila H. Abdel-RahmanRabin BissessurMDPI AGarticlecobalt-containing organoiron dendrimertransition metal phosphidesferromagnetic materialsOrganic chemistryQD241-441ENMolecules, Vol 26, Iss 6732, p 6732 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	cobalt-containing organoiron dendrimer transition metal phosphides ferromagnetic materials Organic chemistry QD241-441
spellingShingle	cobalt-containing organoiron dendrimer transition metal phosphides ferromagnetic materials Organic chemistry QD241-441 Alaa S. Abd-El-Aziz Maysun R. Benaaisha Mohammed S. M. Abdelbaky David Martinez-Blanco Santiago García-Granda Amani A. Abdelghani Laila H. Abdel-Rahman Rabin Bissessur Development of Ferromagnetic Materials Containing Co<sub>2</sub>P, Fe<sub>2</sub>P Phases from Organometallic Dendrimers Precursors
description	The development of synthesis methods to access advanced materials, such as magnetic materials that combine multimetallic phosphide phases, remains a worthy research challenge. The most widely used strategies for the synthesis of magnetic transition metal phosphides (TMPs) are organometallic approaches. In this study, Fe-containing homometallic dendrimers and Fe/Co-containing heterometallic dendrimers were used to synthesize magnetic materials containing multimetallic phosphide phases. The crystalline nature of the nearly aggregated particles was indicated for both designed magnetic samples. In contrast to heterometallic samples, homometallic samples showed dendritic effects on their magnetic properties. Specifically, saturation magnetization (<i>M<sub>s</sub></i>) and coercivity (<i>H<sub>c</sub></i>) decrease as dendritic generation increases. Incorporating cobalt into the homometallic dendrimers to prepare the heterometallic dendrimers markedly increases the magnetic properties of the magnetic materials from 60 to 75 emu/g. Ferromagnetism in homometallic and heterometallic particles shows different responses to temperature changes. For example, heterometallic samples were less sensitive to temperature changes due to the presence of Co<sub>2</sub>P in contrast to the homometallic ones, which show an abrupt change in their slopes at a temperature close to 209 K, which appears to be related to the Fe<sub>2</sub>P ratios. This study presents dendrimers as a new type of precursor for the assembly of magnetic materials containing a mixture of iron- and cobalt-phosphides phases with tunable magnetism, and provides an opportunity to understand magnetism in such materials.
format	article
author	Alaa S. Abd-El-Aziz Maysun R. Benaaisha Mohammed S. M. Abdelbaky David Martinez-Blanco Santiago García-Granda Amani A. Abdelghani Laila H. Abdel-Rahman Rabin Bissessur
author_facet	Alaa S. Abd-El-Aziz Maysun R. Benaaisha Mohammed S. M. Abdelbaky David Martinez-Blanco Santiago García-Granda Amani A. Abdelghani Laila H. Abdel-Rahman Rabin Bissessur
author_sort	Alaa S. Abd-El-Aziz
title	Development of Ferromagnetic Materials Containing Co<sub>2</sub>P, Fe<sub>2</sub>P Phases from Organometallic Dendrimers Precursors
title_short	Development of Ferromagnetic Materials Containing Co<sub>2</sub>P, Fe<sub>2</sub>P Phases from Organometallic Dendrimers Precursors
title_full	Development of Ferromagnetic Materials Containing Co<sub>2</sub>P, Fe<sub>2</sub>P Phases from Organometallic Dendrimers Precursors
title_fullStr	Development of Ferromagnetic Materials Containing Co<sub>2</sub>P, Fe<sub>2</sub>P Phases from Organometallic Dendrimers Precursors
title_full_unstemmed	Development of Ferromagnetic Materials Containing Co<sub>2</sub>P, Fe<sub>2</sub>P Phases from Organometallic Dendrimers Precursors
title_sort	development of ferromagnetic materials containing co<sub>2</sub>p, fe<sub>2</sub>p phases from organometallic dendrimers precursors
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/745c7e50ab8f44928bc2b835833ea9f7
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Development of Ferromagnetic Materials Containing Co<sub>2</sub>P, Fe<sub>2</sub>P Phases from Organometallic Dendrimers Precursors

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