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Published on: October 16, 2017
Surface Morphology Analysis of Zirconium Dioxide Nanoparticles at 1200 K by Transmission Electron Microscopy
Shogo Kikuchi1, Tomo-O Terasawa1, Tokushi Kizuka1
1Division of Materials Science, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan.
Abstract:
Zirconium dioxide (ZrO2) nanoparticles were heated at 1200 K in a transmission electron microscope, and their surfaces were observed in situ via lattice imaging. The nanoparticles exhibited well-defined crystal habits while fluctuating the surface terrace structures. The stable surfaces and ridges were inferred from the fluctuation of the terraces, leading to the construction of the three-dimensional surface structures at 1200 K. By contrast, after the specimen cooled to room temperature, the surface fluctuation of the nanoparticles stopped and the crystal habit disappeared, implying that the crystal habit was maintained because of atomic diffusion during the surface fluctuation.
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