Bonding nature of metal/oxide incoherent interfaces by first-principles calculations

Katsuyuki Matsunaga, Takeo Sasaki, Naoya Shibata, Teruyasu Mizoguchi, Takahisa Yamamoto, Yuichi Ikuhara

研究成果: Article

44 引用 (Scopus)

抜粋

A bonding mechanism of large-mismatched metal/oxide heterointerfaces, classified as incoherent interfaces, is investigated by first-principles calculations. As a model system, incoherent Ni Zr O2 (111) interfaces are selected, and the interfacial bonding characters and their relevance to the interface strength are analyzed. It is found that the chemical bonds of the interfacial atomic pairs are strongly dependent on the atomic configurations in the interface structures, and show a site-dependent character from ionic through covalent/metallic bonding. Thus, even in the presence of a large misfit, stable interfaces can be formed by an effective chemical bonding transition along the interfaces. First-principles tensile tests show that such a bonding multiplicity strongly affects the atomic-scale fracture behavior and ideal mechanical strength of the interfaces.

元の言語English
記事番号125423
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
74
発行部数12
DOI
出版物ステータスPublished - 2006
外部発表Yes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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