دورية أكاديمية
The effect of alkaline earth metal substitution on thermoelectric properties of A0.98La0.02MnO3-δ (A=Ca,Ba)
| العنوان: | The effect of alkaline earth metal substitution on thermoelectric properties of A0.98La0.02MnO3-δ (A=Ca,Ba) |
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| المؤلفون: | Singh Sathya Prakash, Kanas Nikola, Einarsrud Mari-Ann, Wiik Kjell |
| المصدر: | Processing and Application of Ceramics, Vol 16, Iss 1, Pp 78-82 (2022) |
| بيانات النشر: | University of Novi Sad, 2022. |
| سنة النشر: | 2022 |
| المجموعة: | LCC:Clay industries. Ceramics. Glass |
| مصطلحات موضوعية: | manganites, thermoelectric properties, alkaline earth metal ion substitution, tolerance factor, Clay industries. Ceramics. Glass, TP785-869 |
| الوصف: | The thermoelectric properties of ceramics with composition A0.98La0.02MnO3-δ are anticipated to vary with the basicity and atomic portion of the alkaline earth metal, A. In the present investigation ceramic powder precursors with composition A0.98La0.02MnO3-δ (A = Ca, Ba) were synthesized by the solid-state method and sintered in air at 1400°C. Seebeck coefficient, electrical and thermal conductivities were characterized for both materials from 100 to 900°C in air. The highest zT of 0.10 at 900°C was reached for Ca0.98La0.02MnO3-δ. The high zT is attributed to the enhanced electronic conductivity (∼90 S/cm at 900°C) due to La doping. zT for Ba0.98La0.02MnO3-δ reached its highest value (0.02) at 800°C corresponding to a low electronic conductivity (∼2 S/cm), while the thermal conductivity was significantly reduced compared to Ca0.98La0.02MnO3-δ reaching ∼1W/(m•K) combined with a high Seebeck coefficient, −290 μV/K. The present data represent a valuable basis for further development of these materials with respect to applications in thermoelectric devices. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1820-6131 2406-1034 |
| Relation: | https://doaj.org/toc/1820-6131; https://doaj.org/toc/2406-1034 |
| DOI: | 10.2298/PAC2201078S |
| URL الوصول: | https://doaj.org/article/096231e711494b6db4c9120258b64611 |
| رقم الأكسشن: | edsdoj.096231e711494b6db4c9120258b64611 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 18206131 24061034 |
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| DOI: | 10.2298/PAC2201078S |