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Title: Formation and evolution of body-centered orthorhombic mesophase in TiO 2 thin films
Authors: Zhang, Y. 
Sim, C.H. 
Yuwono, A.H. 
Li, J. 
Wang, J. 
Issue Date: Jun-2009
Citation: Zhang, Y., Sim, C.H., Yuwono, A.H., Li, J., Wang, J. (2009-06). Formation and evolution of body-centered orthorhombic mesophase in TiO 2 thin films. Journal of the American Ceramic Society 92 (6) : 1317-1321. ScholarBank@NUS Repository.
Abstract: A new mesophase orientation has been established in TiO2 thin films formed by self-assembling of a poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) triblock copolymer (Pluronic F127). They were then characterized by using scanning electron microscopy, transmission electron microscopy, small-angle X-ray scattering, and X-ray diffraction. This new mesophase was identified and indexed as a body-centered orthorhombic mesophase structure with the (001) plane parallel to the substrate. It may well originate from a body-centered tetragonal structure, orienting with the square base perpendicular to the substrate. The mesophase then underwent a uniaxial contraction in the direction normal to the substrate upon drying and thermal treatment. As a result, the in-plane parameters were preserved whereas the out-of-plane parameters were markedly reduced by heating. © 2009 The American Ceramic Society.
Source Title: Journal of the American Ceramic Society
ISSN: 00027820
DOI: 10.1111/j.1551-2916.2009.03027.x
Appears in Collections:Staff Publications

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