Heat flux sensing by anomalous Nernst effect in Fe–Al thin films on a flexible substrate
Heat flux sensing by anomalous Nernst effect in Fe–Al thin films on a flexible substrate
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DOI：
10.35848/1882-0786/ab79fe
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发表时间：
2020-03
影响因子：
2.3
通讯作者：
Weinan Zhou;Y. Sakuraba
中科院分区：
文献类型：
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作者：
Weinan Zhou;Y. Sakuraba
我们对利用反常能效应（ANE）实现热通量传感器所需的材料参数进行了数值分析。结果表明，ANE （SANE）的高热功率和小饱和磁化强度是重要的。这促使我们研究Al取代Fe对ANE的影响，发现Fe81Al19中的SANE = 3.4 μV K−1是主要的内在机制。利用这种材料，我们在薄的柔性聚酰亚胺片上制作了一个基于ane的热流传感器原型，并演示了它的精确传感。该研究为提高传感器灵敏度提供了重要信息。
We performed a numerical analysis of the material parameters required for realizing a heat flux sensor exploiting the anomalous Nernst effect (ANE). The results showed the importance of high thermopower of ANE (SANE) and small saturation magnetization. This motivated us to investigate the effect of Al substitution of Fe on ANE and found SANE = 3.4 μV K−1 in Fe81Al19 because of the dominant intrinsic mechanism. Using this material, we made a prototype ANE-based heat flux sensor on a thin flexible polyimide sheet and demonstrated accurate sensing with it. This study gives important information for enhancing sensor sensitivity.