Bukreev Dmitriy A, Derevyanko Michael S, Moiseev Alexey A, Semirov Alexander V, Savin Peter A, Kurlyandskaya Galina V
Department of Physics, Irkutsk State University, 1 Karl Marx St., 664003 Irkutsk, Russia.
Department of Magnetism and Magnetic Nanomaterials, INSM, Ural Federal University, 19 Mira St., 620002 Ekaterinburg, Russia.
Materials (Basel). 2020 Jul 19;13(14):3216. doi: 10.3390/ma13143216.
The temperature dependencies of magnetoimpedance (MI) and stress impedance (SI) were analyzed both in the as-quenched soft magnetic CoFeSiB ribbons and after their heat treatment at 425 K for 8 h. It was found that MI shows weak changes under the influence of mechanical stresses in the temperature range of 295-325 K and SI does not exceed 10%. At higher temperatures, the MI changes significantly under the influence of mechanical stresses, and SI variations reach 30%. Changes in the magnetoelastic properties for the different temperatures were taken into consideration for the discussion of the observed MI and SI responses. The solutions for the problem of thermal stability of the magnetic sensors working on the principles of MI or SI were discussed taking into account the joint contributions of the temperature and the applied mechanical stresses.
对淬火态软磁CoFeSiB薄带及其在425 K下热处理8 h后的磁阻抗（MI）和应力阻抗（SI）的温度依赖性进行了分析。结果发现，在295 - 325 K温度范围内，MI在机械应力影响下变化微弱，SI不超过10%。在较高温度下，MI在机械应力影响下变化显著，SI变化可达30%。在讨论观察到的MI和SI响应时，考虑了不同温度下磁弹性性能的变化。考虑到温度和外加机械应力的共同作用，讨论了基于MI或SI原理工作的磁传感器热稳定性问题的解决方案。
