کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1332726 | 979052 | 2008 | 7 صفحه PDF | دانلود رایگان |
The microstructure and phase stability of nanocrystalline mixed oxide LuxCe1−xO2−y (x=0–1) are described. Nano-sized (3–4 nm) oxide particles were prepared by the reverse microemulsion method. Morphological and structural changes upon heat treatment in an oxidizing atmosphere were studied by transmission electron microscopy (TEM), X-ray diffraction (XRD), Raman and Yb3+ emission spectroscopy, the latter ion being present as an impurity in the Lu2O3 starting material. Up to 950 °C, the samples were single phase, with structure changing smoothly with Lu content from fluorite type (F) to bixbyite type (C). For the samples heated at 1100 °C phase separation into coexisting F- and C-type structures was observed for 0.35 Phase separation in nanocrystalline Ce1−xLuxO2−y mixed oxide heated in air at 1100 °C.Figure optionsDownload as PowerPoint slide
Journal: Journal of Solid State Chemistry - Volume 181, Issue 9, September 2008, Pages 2306–2312