Thermoelectric properties of Ca<sub>0.8</sub>Dy<sub>0.2</sub>MnO<sub>3 </sub>synthesized by solution combustion process
<p>Abstract</p> <p>High-quality Ca<sub>0.8</sub>Dy<sub>0.2</sub>MnO<sub>3 </sub>nano-powders were synthesized by the solution combustion process. The size of the synthesized Ca<sub>0.8</sub>Dy<sub>0.2</sub>MnO<sub>3...
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SpringerOpen
2011-01-01
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| Series: | Nanoscale Research Letters |
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| Online Access: | http://www.nanoscalereslett.com/content/6/1/548 |
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| author | Park Kyeongsoon Lee Ga |
| author_facet | Park Kyeongsoon Lee Ga |
| author_sort | Park Kyeongsoon |
| collection | DOAJ |
| description | <p>Abstract</p> <p>High-quality Ca<sub>0.8</sub>Dy<sub>0.2</sub>MnO<sub>3 </sub>nano-powders were synthesized by the solution combustion process. The size of the synthesized Ca<sub>0.8</sub>Dy<sub>0.2</sub>MnO<sub>3 </sub>powders was approximately 23 nm. The green pellets were sintered at 1150-1300°C at a step size of 50°C. Sintered Ca<sub>0.8</sub>Dy<sub>0.2</sub>MnO<sub>3 </sub>bodies crystallized in the perovskite structure with an orthorhombic symmetry. The sintering temperature did not affect the Seebeck coefficient, but significantly affected the electrical conductivity. The electrical conductivity of Ca<sub>0.8</sub>Dy<sub>0.2</sub>MnO<sub>3 </sub>increased with increasing temperature, indicating a semiconducting behavior. The absolute value of the Seebeck coefficient gradually increased with an increase in temperature. The highest power factor (3.7 × 10<sup>-5 </sup>Wm<sup>-1 </sup>K<sup>-2 </sup>at 800°C) was obtained for Ca<sub>0.8</sub>Dy<sub>0.2</sub>MnO<sub>3 </sub>sintered at 1,250°C. In this study, we investigated the microstructure and thermoelectric properties of Ca<sub>0.8</sub>Dy<sub>0.2</sub>MnO<sub>3</sub>, depending on sintering temperature.</p> |
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| language | English |
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| spelling | doaj.art-232e4920cc884a68af91947567b47ffe2023-09-02T09:53:33ZengSpringerOpenNanoscale Research Letters1931-75731556-276X2011-01-0161548Thermoelectric properties of Ca<sub>0.8</sub>Dy<sub>0.2</sub>MnO<sub>3 </sub>synthesized by solution combustion processPark KyeongsoonLee Ga<p>Abstract</p> <p>High-quality Ca<sub>0.8</sub>Dy<sub>0.2</sub>MnO<sub>3 </sub>nano-powders were synthesized by the solution combustion process. The size of the synthesized Ca<sub>0.8</sub>Dy<sub>0.2</sub>MnO<sub>3 </sub>powders was approximately 23 nm. The green pellets were sintered at 1150-1300°C at a step size of 50°C. Sintered Ca<sub>0.8</sub>Dy<sub>0.2</sub>MnO<sub>3 </sub>bodies crystallized in the perovskite structure with an orthorhombic symmetry. The sintering temperature did not affect the Seebeck coefficient, but significantly affected the electrical conductivity. The electrical conductivity of Ca<sub>0.8</sub>Dy<sub>0.2</sub>MnO<sub>3 </sub>increased with increasing temperature, indicating a semiconducting behavior. The absolute value of the Seebeck coefficient gradually increased with an increase in temperature. The highest power factor (3.7 × 10<sup>-5 </sup>Wm<sup>-1 </sup>K<sup>-2 </sup>at 800°C) was obtained for Ca<sub>0.8</sub>Dy<sub>0.2</sub>MnO<sub>3 </sub>sintered at 1,250°C. In this study, we investigated the microstructure and thermoelectric properties of Ca<sub>0.8</sub>Dy<sub>0.2</sub>MnO<sub>3</sub>, depending on sintering temperature.</p>http://www.nanoscalereslett.com/content/6/1/548electrical conductivitysolution combustion processSeebeck coefficientpower factorCa<sub>0.8</sub>Dy<sub>0.2</sub>MnO<sub>3</sub> |
| spellingShingle | Park Kyeongsoon Lee Ga Thermoelectric properties of Ca<sub>0.8</sub>Dy<sub>0.2</sub>MnO<sub>3 </sub>synthesized by solution combustion process Nanoscale Research Letters electrical conductivity solution combustion process Seebeck coefficient power factor Ca<sub>0.8</sub>Dy<sub>0.2</sub>MnO<sub>3</sub> |
| title | Thermoelectric properties of Ca<sub>0.8</sub>Dy<sub>0.2</sub>MnO<sub>3 </sub>synthesized by solution combustion process |
| title_full | Thermoelectric properties of Ca<sub>0.8</sub>Dy<sub>0.2</sub>MnO<sub>3 </sub>synthesized by solution combustion process |
| title_fullStr | Thermoelectric properties of Ca<sub>0.8</sub>Dy<sub>0.2</sub>MnO<sub>3 </sub>synthesized by solution combustion process |
| title_full_unstemmed | Thermoelectric properties of Ca<sub>0.8</sub>Dy<sub>0.2</sub>MnO<sub>3 </sub>synthesized by solution combustion process |
| title_short | Thermoelectric properties of Ca<sub>0.8</sub>Dy<sub>0.2</sub>MnO<sub>3 </sub>synthesized by solution combustion process |
| title_sort | thermoelectric properties of ca sub 0 8 sub dy sub 0 2 sub mno sub 3 sub synthesized by solution combustion process |
| topic | electrical conductivity solution combustion process Seebeck coefficient power factor Ca<sub>0.8</sub>Dy<sub>0.2</sub>MnO<sub>3</sub> |
| url | http://www.nanoscalereslett.com/content/6/1/548 |
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