Electron state of V₇O₁₃ studied by electron diffraction

Yoshihiko Hirotsu Department of Metallurgy, Tokyo Institute of Technology, Oh-okayama, Meguro-ku, Tokyo, Japan; Department of Mechanical Engineering, Technological University of Nagaoka, Kamitomiokacho, Nagaoka, Niigata, Japan

Sigemaro Nagakura Department of Metallurgy, Tokyo Institute of Technology, Oh-okayama, Meguro-ku, Tokyo, Japan

Hiroshi Sato School of Materials Engineering, Purdue University, West Lafayette, Indiana, 47907, U.S.A.

Abstract

The electron state of metallic V₇O₁₃ is studied by means of the intensity analysis of electron diffraction. Diffraction intensities of systematic 00/ reflections from lattice planes parallel to the crystallographic shear plane have been obtained under the axial-beam illumination condition and are compared with calculated intensities based on several structure models with different electron states and also on different atomic scattering factors. It is concluded that the electron state is almost neutral as a result of the metallic or covalent nature of bonding between vanadium or vanadium-oxygen atoms.

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Electron state of V₇O₁₃ studied by electron diffraction

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Electron state of V₇O₁₃ studied by electron diffraction