کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1298712 1498371 2008 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Compositional and structural characteristics of nano-sized domains in gadolinium-doped ceria
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Compositional and structural characteristics of nano-sized domains in gadolinium-doped ceria
چکیده انگلیسی

Nano-sized domains were studied systematically in 10–30 at.% Gd-doped ceria. By using energy filtering transmission electron microscopy, it was observed that Gd cations could segregate in the domains. Due to the requirement of electrical neutrality, oxygen vacancies may also segregate into the domains with the dopant cations. Through study of electron energy loss spectroscopy, the local ordering of oxygen vacancies in the domains was further confirmed. Furthermore, the nano-sized domains and the local ordering develop with increasing doping concentration. Based on the experimental results, the formation mechanism of the domains and their effect on the ionic conductivity are discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 179, Issues 21–26, 15 September 2008, Pages 827–831
نویسندگان
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