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Nickel-Doped Ceria Nanoparticles: The Effect of Annealing on Room Temperature Ferromagnetism / Joseph Bear, Paul McNaughter, Paul Southern, Paul O’Brien, Charles Dunnill, Charlie Dunnill

Crystals, Volume: 5, Issue: 3, Pages: 312 - 326

Swansea University Author: Charlie Dunnill

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DOI (Published version): 10.3390/cryst5030312

Abstract

Nickel-doped cerium dioxide nanoparticles exhibit room temperature ferromagnetism due to high oxygen mobility within the doped CeO2 lattice. CeO2 is an excellent doping matrix as it can lose oxygen whilst retaining its structure. This leads to increased oxygen mobility within the fluorite CeO2 latti...

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Published in: Crystals
Published: 2015
Online Access: http://www.mdpi.com/2073-4352/5/3/312/html
URI: https://cronfa.swan.ac.uk/Record/cronfa29223
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spelling 2017-10-23T14:59:30.4101184 v2 29223 2016-07-18 Nickel-Doped Ceria Nanoparticles: The Effect of Annealing on Room Temperature Ferromagnetism 0c4af8958eda0d2e914a5edc3210cd9e 0000-0003-4052-6931 Charlie Dunnill Charlie Dunnill true false 2016-07-18 CHEG Nickel-doped cerium dioxide nanoparticles exhibit room temperature ferromagnetism due to high oxygen mobility within the doped CeO2 lattice. CeO2 is an excellent doping matrix as it can lose oxygen whilst retaining its structure. This leads to increased oxygen mobility within the fluorite CeO2 lattice, leading to the formation of Ce3+ and Ce4+ species and hence doped ceria shows a high propensity for numerous catalytic processes. Magnetic ceria are important in several applications from magnetic data storage devices to magnetically recoverable catalysts. We investigate the effect doping nickel into a CeO2 lattice has on the room temperature ferromagnetism in monodisperse cerium dioxide nanoparticles synthesised by the thermal decomposition of cerium(III) and nickel(II) oleate metal organic precursors before and after annealing. The composition of nanoparticles pre- and post-anneal were analysed using: TEM (transmission electron microscopy), XPS (X-ray photoelectron spectroscopy), EDS (energy-dispersive X-ray spectroscopy) and XRD (X-ray diffraction). Optical and magnetic properties were also studied using UV/Visible spectroscopy and SQUID (superconducting interference device) magnetometry respectively. Journal Article Crystals 5 3 312 326 ceria; nickel doping; ferromagnetism; catalysis; nanoparticles 21 8 2015 2015-08-21 10.3390/cryst5030312 http://www.mdpi.com/2073-4352/5/3/312/html This is an open access article distributed under the Creative Commons Attribution License (CC BY 4.0). COLLEGE NANME Chemical Engineering COLLEGE CODE CHEG Swansea University 2017-10-23T14:59:30.4101184 2016-07-18T10:05:03.8899086 College of Engineering Engineering Joseph Bear 1 Paul McNaughter 2 Paul Southern 3 Paul O’Brien 4 Charles Dunnill 5 Charlie Dunnill 0000-0003-4052-6931 6
title Nickel-Doped Ceria Nanoparticles: The Effect of Annealing on Room Temperature Ferromagnetism
spellingShingle Nickel-Doped Ceria Nanoparticles: The Effect of Annealing on Room Temperature Ferromagnetism
Charlie, Dunnill
title_short Nickel-Doped Ceria Nanoparticles: The Effect of Annealing on Room Temperature Ferromagnetism
title_full Nickel-Doped Ceria Nanoparticles: The Effect of Annealing on Room Temperature Ferromagnetism
title_fullStr Nickel-Doped Ceria Nanoparticles: The Effect of Annealing on Room Temperature Ferromagnetism
title_full_unstemmed Nickel-Doped Ceria Nanoparticles: The Effect of Annealing on Room Temperature Ferromagnetism
title_sort Nickel-Doped Ceria Nanoparticles: The Effect of Annealing on Room Temperature Ferromagnetism
author_id_str_mv 0c4af8958eda0d2e914a5edc3210cd9e
author_id_fullname_str_mv 0c4af8958eda0d2e914a5edc3210cd9e_***_Charlie, Dunnill
author Charlie, Dunnill
author2 Joseph Bear
Paul McNaughter
Paul Southern
Paul O’Brien
Charles Dunnill
Charlie Dunnill
format Journal article
container_title Crystals
container_volume 5
container_issue 3
container_start_page 312
publishDate 2015
institution Swansea University
doi_str_mv 10.3390/cryst5030312
college_str College of Engineering
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hierarchy_top_id collegeofengineering
hierarchy_top_title College of Engineering
hierarchy_parent_id collegeofengineering
hierarchy_parent_title College of Engineering
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url http://www.mdpi.com/2073-4352/5/3/312/html
document_store_str 0
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description Nickel-doped cerium dioxide nanoparticles exhibit room temperature ferromagnetism due to high oxygen mobility within the doped CeO2 lattice. CeO2 is an excellent doping matrix as it can lose oxygen whilst retaining its structure. This leads to increased oxygen mobility within the fluorite CeO2 lattice, leading to the formation of Ce3+ and Ce4+ species and hence doped ceria shows a high propensity for numerous catalytic processes. Magnetic ceria are important in several applications from magnetic data storage devices to magnetically recoverable catalysts. We investigate the effect doping nickel into a CeO2 lattice has on the room temperature ferromagnetism in monodisperse cerium dioxide nanoparticles synthesised by the thermal decomposition of cerium(III) and nickel(II) oleate metal organic precursors before and after annealing. The composition of nanoparticles pre- and post-anneal were analysed using: TEM (transmission electron microscopy), XPS (X-ray photoelectron spectroscopy), EDS (energy-dispersive X-ray spectroscopy) and XRD (X-ray diffraction). Optical and magnetic properties were also studied using UV/Visible spectroscopy and SQUID (superconducting interference device) magnetometry respectively.
published_date 2015-08-21T03:42:09Z
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score 10.8434725