Laser Ablation Deposition of CeO2−x Epitaxial Domains on Glass |
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Authors: | W.H. LeeP. Shen |
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Affiliation: | Institute of Materials Science and Engineering, National Sun Yat-sen University, Kaohsiung, Taiwan, Republic of China |
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Abstract: | Laser ablation of CeO2 target in vacuum (5×10−4 Pa) was used to produce nanometer-size condensates, which deposited as yellowish top coating and whitish bottom coating on a soda-lime glass substrate. The top coating consists of optically anisotropic columnar domains conformable to monoclinic Ce6O11 phase coexisting with cubic (c) CeO2−x, whereas the bottom coating is optically isotropic c-CeO2−x due to oxygen uptake from the substrate. Transmission electron microscopy indicated that the columnar domains are made up of defective fluorite-type nanoparticles, which tended to coalesce over (111) plane to form dislocations and (111)-preferred orientation, an artificial epitaxy owing to rotation-coalescence of (111) faceted CeO2−x condensates on the amorphous substrate and/or within the coating. |
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Keywords: | CeO2&minus x condensate glass substrate laser ablation deposition artificial epitaxy. |
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