کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1814670 1025653 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modified texture and high temperature transport properties of doubly substituted BaxAgyCa2.8Co4O9 thermoelectric oxide
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Modified texture and high temperature transport properties of doubly substituted BaxAgyCa2.8Co4O9 thermoelectric oxide
چکیده انگلیسی

Doubly substituted polycrystalline compound bulk samples of BaxAgyCa2.8Co4O9 were prepared via citrate acid sol–gel method followed by spark plasma sintering. The phase composition, orientation, texture and high temperature electrical properties were systematically investigated. The results showed that the orientation and the texture could be modified by altering ratio of Ba to Ag. The resistivity and the Seebeck coefficient of substituted samples were decreased by decreasing Ba/Ag ratio except for that of Ba0.1Ag0.1Ca2.8Co4O9 sample with lowest electrical resistivity (7.2 mΩ cm at 973 K), moderately high Seebeck coefficient (172 μV/K at 973 K) and improved power factor (0.42 mW/mK2 at 973 K).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 404, Issue 16, 1 August 2009, Pages 2142–2145
نویسندگان
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