Direct imaging of atomic clusters in an amorphous matrix: A Co-C granular thin film

Kazuhisa Sato, Masaki Mizuguchi, Ruihe Tang, Jung Goo Kang, Manabu Ishimaru, Koki Takanashi, Toyohiko J. Konno

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The atomic structure of extremely small cobalt (Co) nanoparticles embedded in an amorphous carbon (C) matrix has been studied by spherical aberration (C s) corrected high-resolution transmission electron microscopy and focal-series restoration. The Co nanoparticles, 1-3 nm in diameter, are crystalline with the face centered cubic structure, while the radial distribution function analysis revealed the existence of a Co-C bond. The reconstructed phase images of the exit-wave function clearly show the projected potential distribution within the Co nanoparticles. The C s-correction has hence a benefit to visualize embedded crystalline clusters unambiguously, which are responsible for the magnetotransport properties of the Co-C films.

Original languageEnglish
Article number191902
JournalApplied Physics Letters
Volume101
Issue number19
DOIs
Publication statusPublished - 2012 Nov 5

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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