Bieńkowski Adam, Szewczyk Roman
Institute of Metrology and Biomedical Engineering, Warsaw University of Technology, 02-525 Warsaw, Poland.
Materials (Basel). 2018 Oct 3;11(10):1894. doi: 10.3390/ma11101894.
This paper presents the results of measurements of magnetostrictive properties of MnZnFeO₄ ferrite for power applications. Frame-shaped samples were used for measurements to guarantee a uniform magnetizing field and magnetostrictive strain distribution. Magnetostrictive hysteresis loops were measured by semiconductor strain gauges. The results indicate that the magnetostrictive characteristic of MnZnFeO₄ ferrite is non-monotonic and magnetostriction changes have opposite signs for higher values of the magnetizing field.
本文介绍了用于电力应用的MnZnFeO₄铁氧体磁致伸缩特性的测量结果。采用框架形样品进行测量，以确保均匀的磁化场和磁致伸缩应变分布。通过半导体应变片测量磁致伸缩磁滞回线。结果表明，MnZnFeO₄铁氧体的磁致伸缩特性是非单调的，并且在较高的磁化场值下磁致伸缩变化具有相反的符号。
