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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국전기전자재료학회 Transactions on Electrical and Electronic Materials Transactions on Electrical and Electronic Materials 제19권 제4호
- 발행연도
- 2018.8
- 수록면
- 279 - 284 (6page)
- DOI
- https://doi.org/10.1007/s42341-018-0044-6
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Mn-doped FeVSb half-Heusler alloys were synthesized via a mechanical alloying process and consolidated by vacuum hotpressing. The microstructure and phase transformation of all the samples were examined by XRD and SEM. Thermoelectricproperties such as the Seebeck coeffi cient, electrical conductivity and thermal conductivity were investigated in the moderatetemperature range from 300 to 973 K. The negative value of both the Seebeck and Hall coeffi cients confi rms the presenceof n-type conductivity. The Seebeck coeffi cient increased with an increasing doping amount, but the electrical conductivitydecreased, owing to decreasing carrier concentration. The thermal conductivity found in this experiment was quite high,possibly due to bipolar diff usion of the electronic band energy. The maximum value of the dimensionless fi gure of merit wasachieved using a relatively high value of the Seebeck coeffi cient and a signifi cantly higher value of electrical conductivity.
The maximum value of ZT was observed for Fe 0.996 Mn 0.004 VSb at 468 K.
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