Morphology, orientation relationship, and stability analysis of Cu 2O nanoclusters on SrTiO3 (100)

Satyanarayana V.N.T. Kuchibhatla, S. Y. Hu, Z. Q. Yu, V. Shutthanandan, Y. L. Li, P. Nachimuthu, W. Jiang, S. Thevuthasan, C. H. Henager, S. K. Sundaram

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    Abstract

    Reflection high energy electron diffraction, atomic force microscopy, and theoretical studies based on classical nucleation theory have been used to interpret the morphology, orientation relationship, and stability of Cu 2 O nanoclusters on SrTiO3 (100) (STO). We propose that the competing interfacial and elastic energies facilitate an in-plane rotation of the Cu2 O clusters by 45° with respect to the STO substrate and stabilize Cu2 O clusters on STO(100) with an orientation relationship of (001) Cu2 O // (001) SrTiO3 and 〈 100 〉 Cu2 O // 〈110〉SrTiO3. Our preliminary theoretical analysis also suggests that this particular orientation results in smaller critical nucleus sizes and lower nucleation barriers and also indicates a chemical potential (growth rate) dependence of the orientation relationship.

    Original languageEnglish
    Article number053111
    JournalApplied Physics Letters
    Volume95
    Issue number5
    DOIs
    Publication statusPublished - 14 Aug 2009

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

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    Kuchibhatla, S. V. N. T., Hu, S. Y., Yu, Z. Q., Shutthanandan, V., Li, Y. L., Nachimuthu, P., Jiang, W., Thevuthasan, S., Henager, C. H., & Sundaram, S. K. (2009). Morphology, orientation relationship, and stability analysis of Cu 2O nanoclusters on SrTiO3 (100). Applied Physics Letters, 95(5), [053111]. https://doi.org/10.1063/1.3193530