کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1297488 | 1498403 | 2006 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Local structures around Y and Ce cations in 10 mol% Y2O3 doped ceria ceramics by EXAFS spectroscopy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Local structures around host Ce and dopant Y cations in 10 mol% Y2O3 doped ceria solid solutions have been investigated by room and high temperature EXAFS spectroscopy. The results show that the local structures around the Ce cation in doped ceria samples are similar to that in the fluorite CeO2 structure though the coordination numbers of Ce–O tend to be smaller than 8. The local structures around Y cation, however, are significantly different from those around Ce cation, and show more resemblance to that around Y cation in the C-type Y2O3 structure. A more accurate description of the local structures around Y cation in doped ceria was given by analyzing Y–K edge EXAFS spectra based on the C-type Y2O3 structure.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 177, Issues 19–25, 15 October 2006, Pages 1681–1685
Journal: Solid State Ionics - Volume 177, Issues 19–25, 15 October 2006, Pages 1681–1685
نویسندگان
Yarong Wang, Hiroyuki Kageyama, Toshiyuki Mori, Hideki Yoshikawa, John Drennan,