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dc.contributor.authorChen, Shu
dc.contributor.authorLee, Stephen L.
dc.contributor.authorAndré, Pascal
dc.identifier.citationChen , S , Lee , S L & André , P 2016 , ' Silicide induced surface defects in FePt nanoparticle fcc -to- fct thermally activated phase transition ' , Journal of Magnetism and Magnetic Materials , vol. 417 , pp. 442-450 .
dc.identifier.otherPURE: 243265180
dc.identifier.otherPURE UUID: 4ab6c37a-4d1c-4c64-b30a-7cc94691fe96
dc.identifier.otherRIS: urn:049C697821C208B0CACFE26987B82A81
dc.identifier.otherScopus: 84973577753
dc.identifier.otherORCID: /0000-0002-2020-3310/work/54995375
dc.identifier.otherWOS: 000379147500066
dc.descriptionThe authors would like to thank the James and Enid Nicol Trust for funding SC's studentship, the Canon Foundation in Europe for supporting PA's visits at the RIKEN and his Fellowship, and the Ministry of Science, ICT & Future Planning, Korea (201000453, 2015001948, 2014M3A6B3063706) for hosting PA's visits during the final write-up and submission stages of the manuscript.en
dc.description.abstractMagnetic nanoparticles (MnPs) are relevant to a wide range of applications including high density information storage and magnetic resonance imaging to name but a few. Among the materials available to prepare MnPs, FePt is attracting growing attention. However, to harvest the strongest magnetic properties of FePt MnPs, a thermal annealing is often required to convert face-centered cubic as synthesized nPs into its tetragonal phase. Rarely addressed are the potential side effects of such treatments on the magnetic properties. In this study, we focus on the impact of silica shells often used in strategies aiming at overcoming MnP coalescence during the thermal annealing. While we show that this shell does prevent sintering, and that fcc-to-fct conversion does occur, we also reveal the formation of silicide, which can prevent the stronger magnetic properties of fct-FePt MnPs from being fully realised. This report therefore sheds lights on poorly investigated and understood interfacial phenomena occurring during the thermal annealing of MnPs and, by doing so, also highlights the benefits of developing new strategies to avoid silicide formation.
dc.relation.ispartofJournal of Magnetism and Magnetic Materialsen
dc.rights© 2016, Elsevier BV. This work is made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at /
dc.subjectIron platinumen
dc.subjectQC Physicsen
dc.titleSilicide induced surface defects in FePt nanoparticle fcc-to-fct thermally activated phase transitionen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews.Condensed Matter Physicsen
dc.description.statusPeer revieweden

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