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Fig. 5 | Advanced Structural and Chemical Imaging

Fig. 5

From: Detecting structural variances of Co3O4 catalysts by controlling beam-induced sample alterations in the vacuum of a transmission electron microscope

Fig. 5

Electron beam-induced grain reorientation and growth in a polycrystalline Co3O4 film of ~4 nm thickness that was deposited by ALD on an electron transparent SiN membrane. The electron beam acceleration voltage is 300 kV. Dose rates and total doses are indicated. Reconstructed phase images are shown. A box marks a specific grain that helps relating both images to each other. Frames a and b list dose rates and the total electron dose for the series. Comparing frame a and b grains labeled A ([110 zone axis orientation) and C ([100] zone axis orientation) exhibit dominant grain growth because their zone axis pattern is almost maintained. Grains labeled B and D exhibit rotations, their respective zone axis pattern change

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