Magneto-thermopower and magnetoresistance of single Co-Ni alloy nanowires
Magneto-thermopower and magnetoresistance of single Co-Ni alloy nanowires
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DOI：
10.1063/1.4819949
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发表时间：
2013-08-26
影响因子：
4
通讯作者：
Nielsch, Kornelius
中科院分区：
文献类型：
--
作者：
Boehnert, Tim;Vega, Victor;Nielsch, Kornelius
测量了不同成分的Co-Ni合金纳米线的磁热电势，并将其与各向异性磁电阻相关联。Seebeck系数在垂直施加的磁场在室温下的最高绝对和相对变化被确定为1.5 μ VK-1的Co0.24Ni0.76和8.1%的Co0.39Ni0.61纳米线。已实现3.7 mW/mK（2）的功率因数，与Bi 2 Te 3等常见热电材料具有竞争力。对于含有高达39% Co的Co-Ni纳米线，发现Seebeck系数的磁场依赖性变化与电导率之间存在线性关系。（C）2013 AIP Publishing LLC。
The magneto-thermopower is measured and correlated to the anisotropic magnetoresistance of Co-Ni alloyed nanowires with varying composition. The highest absolute and relative variation of the Seebeck coefficient in perpendicularly applied magnetic fields at room temperature is determined to be 1.5 mu VK-1 for Co0.24Ni0.76 and 8.1% for Co0.39Ni0.61 nanowires. Power factors of 3.7 mW/mK(2) have been achieved, which is competitive with common thermoelectric materials like Bi2Te3. For Co-Ni nanowires containing up to 39% Co, a linear relationship between the magnetic field dependent change of the Seebeck coefficient and the electrical conductivity is found. (C) 2013 AIP Publishing LLC.