Seebeck coefficient of (Fe, V)3Al alloys
Seebeck coefficient of (Fe, V)3Al alloys
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(Fe,V)3Al合金的塞贝克系数
DOI：
10.1016/s0925-8388(01)01677-2
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发表时间：
2001
影响因子：
6.2
通讯作者：
K. Ono
中科院分区：
文献类型：
--
作者：
Yoshinori Hanada;R. Suzuki;K. Ono
测量了具有D03结构的三元体系(Fe,V)3Al中的塞贝克系数。当 0–20 mol%V 替换时，它略有增加。在室温下，发现 20-25 mol%V 替代量大幅增加，随后急剧下降至负值。 Fe–23 mol%V–25 mol%Al 和 Fe–27 mol%V–25 mol%Al 时的最大值和最小值分别为 +75 μV/K 和 -165 μV/K。这些值优于铁基热电材料的报告值，但在较高温度下变得更小。塞贝克系数的成分依赖性反映了费米能级的态密度，因为V原子选择性地取代有序D03晶格中的Fe原子。
The Seebeck coefficient in the ternary system (Fe,V)3Al with D03structure was measured. It increased modestly with 0–20 mol%V replacement. A large increase for 20–25 mol%V replacement and a subsequent sharp drop to a negative value was found at room temperature. The maximum and the minimum value were +75 μV/K and −165 μV/K at Fe–23 mol%V–25 mol%Al and at Fe–27 mol%V–25 mol%Al, respectively. These values were better than the reported values in the Fe-based thermoelectric materials, but became smaller at higher temperatures. The compositional dependency of the Seebeck coefficient reflects the density of state at the Fermi level, because V atoms selectively replace Fe atoms in the ordered D03crystal lattice.