کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5440388 | 1398228 | 2017 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Improvement of thermoelectric performance of oxygen reduced Sr0.7Ba0.3Nb2O6-δ ceramics by Lanthanides doping
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Thermoelectric properties of lantanide doped Sr0.7Ba0.3Nb2O6 ceramics were investigated in the temperature range from 323 K to 1073 K. A better electrical conductivity is obtained in the sample with larger ionic radius of doping element. Thus, the highest PF value is achieved in La-doped sample. The NbO2 second phase is counterproductive to reduce the lattice thermal conductivity, so La-doped sample without impurity shows low thermal conductivity. Thus, La-doped sample shows an excellent thermoelectric performance ZT â¼Â 0.35. The small average grain size and the nano-sized phases are observed in Gd and Dy doped samples, both of which contribute to scattering phonons, resulting in low thermal conductivities.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 37, Issue 9, August 2017, Pages 3039-3043
Journal: Journal of the European Ceramic Society - Volume 37, Issue 9, August 2017, Pages 3039-3043
نویسندگان
Yi Li, Jian Liu, Yacui Zhang, Yufei Chen, Jichao Li, Wenbin Su, Hongchao Wang, Jinze Zhai, Teng Wang, Chunlei Wang,