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Magnetic Iron Oxide Nanowires Formed by Reactive Dewetting.
Bennett, Roger A; Etman, Haitham A; Hicks, Hannah; Richards, Leah; Wu, Chen; Castell, Martin R; Dhesi, Sarnjeet S; Maccherozzi, Francesco.
Afiliación
  • Bennett RA; Department of Chemistry , University of Reading , Reading, Berkshire RG6 6AD , United Kingdom.
  • Etman HA; Department of Chemistry , University of Reading , Reading, Berkshire RG6 6AD , United Kingdom.
  • Hicks H; Department of Chemistry , University of Reading , Reading, Berkshire RG6 6AD , United Kingdom.
  • Richards L; Department of Chemistry , University of Reading , Reading, Berkshire RG6 6AD , United Kingdom.
  • Wu C; Department of Materials , University of Oxford , Parks Road, Oxford , OX1 3PH , United Kingdom.
  • Castell MR; Department of Materials , University of Oxford , Parks Road, Oxford , OX1 3PH , United Kingdom.
  • Dhesi SS; Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE , United Kingdom.
  • Maccherozzi F; Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE , United Kingdom.
Nano Lett ; 18(4): 2365-2372, 2018 04 11.
Article en En | MEDLINE | ID: mdl-29561625
The growth and reactive dewetting of ultrathin films of iron oxides supported on Re(0001) surfaces have been imaged in situ in real time. Initial growth forms a nonmagnetic stable FeO (wüstite like) layer in a commensurate network upon which high aspect ratio nanowires of several microns in length but less than 40 nm in width can be fabricated. The nanowires are closely aligned with the substrate crystallography and imaging by X-ray magnetic circular dichroism shows that each contain a single magnetic domain. The driving force for dewetting appears to be the minimization of strain energy of the Fe3O4 crystallites and follows the Tersoff and Tromp model in which strain is minimized at constant height by extending in one epitaxially matched direction. Such wires are promising in spintronic applications and we predict that the growth will also occur on other hexagonal substrates.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: Nano Lett Año: 2018 Tipo del documento: Article País de afiliación: Reino Unido Pais de publicación: Estados Unidos
Texto completo
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XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: Nano Lett Año: 2018 Tipo del documento: Article País de afiliación: Reino Unido Pais de publicación: Estados Unidos