Ion-beam synthesis of epitaxial Au nanocrystals in MgO

S. Thevuthasan, V. Shutthanandan, C. M. Wang, W. J. Weber, W. Jiang, A. Cavanagh, J. Lian, L. M. Wang

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Abstract

The formation of Au nanoclusters in MgO using ion implantation and subsequent annealing was investigated. Approximately 1200 and 1400 Au2+ ions/nm2 were implanted in MgO(100) substrates at 300 and 975 K, respectively. Subsequent annealing in air for 10 h at 1275 K promoted the formation of Au nanostructures in MgO. The sample implanted at 300 K showed severe radiation damage. In addition, two-dimensional plateletlike structures with possible composition of Au and MgO were formed during implantation in the sample that was implanted at 300 K. In contrast, Au implantation at 975 K promoted the nucleation of Au nanostructures during implantation. Subsequent annealing of both samples show three-dimensional clusters in MgO. However, the 975 K implanted sample shows clean, high-quality, single-crystal Au clusters that have an epitaxial relationship to MgO(100).

Original languageEnglish
Pages (from-to)1311-1314
Number of pages4
JournalJournal of Materials Research
Volume19
Issue number5
DOIs
Publication statusPublished - May 2004
Externally publishedYes

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ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Thevuthasan, S., Shutthanandan, V., Wang, C. M., Weber, W. J., Jiang, W., Cavanagh, A., Lian, J., & Wang, L. M. (2004). Ion-beam synthesis of epitaxial Au nanocrystals in MgO. Journal of Materials Research, 19(5), 1311-1314. https://doi.org/10.1557/JMR.2004.0174