کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1297577 973866 2011 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Structure, nonstoichiometry and thermal expansion of the NdBa(Co,Fe)2O5+δ layered perovskite
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Structure, nonstoichiometry and thermal expansion of the NdBa(Co,Fe)2O5+δ layered perovskite
چکیده انگلیسی

NdBaCo2−xFexO5+δ (0.0 ≤ x ≤ 2.0) series were prepared by a solid state reaction. Singe phase solid solutions were obtained within the range 0.0 ≤ x ≤ 1.4. The crystal structure of iron substituted solid solutions NdBaCo2−xFexO5 + δ was described within the tetragonal unit cell ap × ap × 2ap (S.G. P4/mmm). The substitution of cobalt for iron leads to the monotonous increase of the unit cell parameters and the unit cell volume. The values of the oxygen content in NdBaCo2−xFexO5 + δ (x = 0; 0.2) as a function of temperature were determined by TGA. The thermal expansion measurements of NdBaCo2−xFexO5 + δ (x = 0; 0.2; 0.4; 0.6 and 0.8) were performed. Chemical expansion constituent was separated.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 188, Issue 1, 22 April 2011, Pages 53–57
نویسندگان
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