Please use this identifier to cite or link to this item: https://doi.org/10.1039/b105427a
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dc.titleNanohybrids of non-stoichiometric zinc ferrite in amorphous silica
dc.contributor.authorZhou, Z.H.
dc.contributor.authorWang, J.
dc.contributor.authorXue, J.M.
dc.contributor.authorChan, H.S.O.
dc.date.accessioned2014-10-16T08:34:56Z
dc.date.available2014-10-16T08:34:56Z
dc.date.issued2001
dc.identifier.citationZhou, Z.H., Wang, J., Xue, J.M., Chan, H.S.O. (2001). Nanohybrids of non-stoichiometric zinc ferrite in amorphous silica. Journal of Materials Chemistry 11 (12) : 3110-3115. ScholarBank@NUS Repository. https://doi.org/10.1039/b105427a
dc.identifier.issn09599428
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/94346
dc.description.abstractNanohybrids containing non-stoichiometric zinc ferrite of spinel structure in an amorphous silica matrix exhibit a fundamentally different structure to that formed by stoichiometric zinc ferrite. A unique cluster glass structure, where nanocrystallites of zinc ferrite exist in amorphous Fe-rich pockets, occurred at the significantly high Fe/Zn molar ratio of 10, as supported by the magnetic behaviour and characterisation by XRD and TEM. The occurrence of zinc ferrite crystallites due to the Zn2+ deficiency, together with the confinement of the silica matrix, suppresses the nucleation and crystallisation of α-Fe2O3 to a temperature above 900°C, preserving the cluster glass structure. The Fe/Zn molar ratio also affects the optical properties of nanohybrids consisting of the zinc ferrite nanophase in amorphous silica, which demonstrate a high absorption coefficient to yellow light. The absorption edge was blue-shifted by 0.25 eV when the Fe/Zn ratio was increased from 2 to 10.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1039/b105427a
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentCHEMISTRY
dc.contributor.departmentMATERIALS SCIENCE
dc.description.doi10.1039/b105427a
dc.description.sourcetitleJournal of Materials Chemistry
dc.description.volume11
dc.description.issue12
dc.description.page3110-3115
dc.description.codenJMACE
dc.identifier.isiut000172664200047
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