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- W2004996317 abstract "Development of an in-situ specimen treatment chamber for a VG-HB5 STEM microscope is reported. Radiative heat cleaning and thermal metal deposition facilitate preparing better crystal surfaces and fresh submonolayer metal films on crystal surfaces. The Scanning Reflection Electron MIcroscopy (SREM) technique is used to study (1) the surface structure of MgO crystals, (2) decoration effects of deposited Cu particles on MgO surfaces, and (3) electron-beam-induced growth of deposited Pd particles on MgO surfaces. The periodic arrays of MgO crystal surface steps show 20–30 Å periodicity. The as-deposited Cu particles tend to align along [001], the incident beam direction, and/or decorate the edges of big surface steps of the MgO crystal, but, after exposure to the air, these particles appear randomly decorating the fine steps. Electron-beam-induced surface diffusion leading to the growth of Pd particles on MgO surface steps is observed. The core region of the particle growth is formed by the concentrated electron beam and the growth process extends to the nearby region as the condensed electron beam further irradiates the sample surface. Nanodiffraction patterns are used to characterize these metallic particles, which are 10–20 Å in diameter." @default.
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- W2004996317 date "1987-01-01" @default.
- W2004996317 modified "2023-09-28" @default.
- W2004996317 title "SREM of MgO crystal surface structure and in-situ-deposited metallic particles on MgO surface" @default.
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- W2004996317 doi "https://doi.org/10.1016/0304-3991(87)90064-7" @default.
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