学術雑誌論文

学術雑誌論文

text

Journal of Nanomaterials. 2013, 2013, p. 679638

Z-contrast STEM imaging of long-range ordered structures in epitaxially grown CoPt nanoparticles

Hindawi Publishing

英語

text

2013-06-27

https://doi.org/10.1155/2013/679638

Kazuhisa Sato, Keigo Yanajima and Toyohiko J. Konno, Z-Contrast STEM Imaging of Long-Range Ordered Structures in Epitaxially Grown CoPt Nanoparticles, Journal of Nanomaterials, 2013, 679638.

We report on atomic structure imaging of epitaxial L₀CoPt nanoparticles using chemically sensitive high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM). Highly ordered nanoparticles formed by annealing at 973 K show single-variant structure with perpendicular c-axis orientation, while multivariant ordered domains are frequently observed for specimens annealed at 873 K. It was found that the (001) facets of the multivariant particles are terminated by Co atoms rather than by Pt, presumably due to the intermediate stage of atomic ordering. Coexistence of single-variant particles and multivariant particles in the same specimen film suggests that the interfacial energy between variant domains be small enough to form such structural domains in a nanoparticle as small as 4 nm in diameter. © 2013 Kazuhisa Sato et al.

This article is licensed under a Creative Commons Attribution 3.0 Unported License.

89417

Z-contrast STEM imaging of long-range ordered structures in epitaxially grown CoPt nanoparticles

Hindawi Publishing

英語

2013-06-27

Journal of Nanomaterials

2013

679638

https://doi.org/10.1155/2013/679638

https://hdl.handle.net/11094/89417