Nowicki Michał
Warsaw University of Technology, Institute of Metrology and Biomedical Engineering, 02-525 Warsaw, Poland.
Materials (Basel). 2019 Sep 2;12(17):2814. doi: 10.3390/ma12172814.
The results of an investigation on tensile stress dependence of mean Seebeck coefficient in Fe-based amorphous ribbons are presented, constituting a new Seebeck-sigma effect. A measurement test stand, capable of the determination of small variations in thermopower in such materials under stress is described. Exemplary results for commercially available, positively magnetostrictive SA1 and 2605CO amorphous ribbons show significant stress dependence with more than 1% of relative change, in contrast to negatively magnetostrictive 6030D alloys with 0.1% change. Non-ferromagnetic alloys are tested for comparison purposes, giving negligible results. Thus, the possibility of a magnetomechanical mechanism of the stress influence is proposed.
本文给出了对铁基非晶带材中平均塞贝克系数与拉伸应力相关性的研究结果，这构成了一种新的塞贝克-西格玛效应。文中描述了一种测量试验台，它能够测定此类材料在应力作用下热功率的微小变化。市售的具有正磁致伸缩性的SA1和2605CO非晶带材的典型结果显示出显著的应力相关性，相对变化超过1%，而具有负磁致伸缩性的6030D合金的变化为0.1%。为作比较对非铁磁合金进行了测试，结果可忽略不计。因此，提出了应力影响的磁机械机制的可能性。
