Departamento de Física, Universidade Federal do Rio Grande do Norte, 59078-900 Natal, RN, Brazil.
Instituto Federal de Educação Ciência e Tecnologia do Ceará, 63902-580 Quixadá, CE, Brazil.
Sensors (Basel). 2020 Mar 3;20(5):1387. doi: 10.3390/s20051387.
The thermoelectric conversion technique has been explored in a broad range of heat-flow sensors. In this context, the Spin Seebeck Effect emerges as an attractive candidate for biosensor applications, not only for the sensibility improvement but also for the power-saving electronic devices development. Here, we investigate the Longitudinal Spin Seebeck Effect in films with a Co 2 FeAl/W bilayer structure grown onto GaAs (100) substrate, systems having induced uniaxial magnetic anisotropy combined with cubic magnetic anisotropy. From numerical calculations, we address the magnetic behavior and thermoelectric response of the films. By comparing experiment and theory, we explore the possibility of modulating a thermoelectric effect by magnetic anisotropy. We show that the thermoelectric voltage curves may be modulated by the association of magnetic anisotropy induction and experimental parameters employed in the LSSE experiment.
热电转换技术已在广泛的热流传感器中得到探索。在这方面，自旋塞贝克效应作为生物传感器应用的一个有吸引力的候选者出现，不仅因为其灵敏度的提高，还因为其节能电子设备的发展。在这里，我们研究了在 GaAs(100)衬底上生长的 Co2FeAl/W 双层结构薄膜中的纵向自旋塞贝克效应，这些系统具有诱导的单轴各向异性和立方各向异性。从数值计算中，我们解决了薄膜的磁性行为和热电响应问题。通过实验和理论的比较，我们探讨了通过各向异性磁调制热电效应的可能性。我们表明，通过磁各向异性感应与 LSSE 实验中采用的实验参数的结合，可以调制热电电压曲线。
