کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
5462556 1517177 2018 3 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله ISI
Enhanced thermoelectric properties of Sr2Nb2O7 ceramics with barium substitution
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Enhanced thermoelectric properties of Sr2Nb2O7 ceramics with barium substitution
چکیده انگلیسی
Properties of Sr1.9−xBa0.1LaxNb2O7 (SBNL; x = 0.1-0.3) thermoelectric ceramics were investigated in this study. SBNL ceramics were prepared by a reaction-sintering process with the calcinations and subsequent pulverization stages bypassed. Resistivity log ρ = 8.5-9.13 Ω cm at 450 °C and log ρ = 6.8-7.1 Ωcm at 700 °C were observed. Addition of Ba into Sr2Nb2O7 ceramics dramatically enhances the Seebeck coefficient S. S = −66 to −58 μV K−1 at 200 °C and S = −182 to −80 μV K−1 at temperatures around 470 °C for SBNL ceramics. The maximum S = −182 μV K−1 appears at 472 °C for Sr1.6Ba0.1La0.3Nb2O7. κ values at 500 °C are 0.91-1.215 W m−1 K−1 for SBNL ceramics. Enhanced thermoelectric properties of Sr2Nb2O7 ceramics could be obtained with barium substitution.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 211, 15 January 2018, Pages 270-272
نویسندگان
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