%A Yawei Lu(鲁亚巍), Wenbin Hu(胡文彬), Wan Liu(刘婉), Feiming Bai(白飞明) %T Influence of the anisotropy on the magneto-acoustic response of magnetic surface acoustic wave resonators %0 Journal Article %D 2020 %J Chin. Phys. B %R 10.1088/1674-1056/ab8375 %P 67504-067504 %V 29 %N 6 %U {https://cpb.iphy.ac.cn/CN/abstract/article_122574.shtml} %8 2020-06-05 %X One-port magnetic surface acoustic wave (MSAW) resonators are fabricated by stacking multilayered (FeCoSiB/SiO2)n films directly on top of interdigital electrodes. It is shown that the magneto-acoustic response of the MSAW resonators critically depends the hysteresis of ΔE effect. For the magnetic multilayer without induced magnetic anisotropy, the resonance frequency (fR) exhibits a butterfly-like dependence on the external field, therefore, enabling bipolar detection of magnetic field smaller than its coercive field. However, for the magnetic multilayers with induced magnetic anisotropy, butterfly-like or loop-like fR-H curves are measured along the interdigtial electrode fingers or the SAW propagation direction, which can be attributed to the competition between the magnetic field-induced anisotropy and the stress-induced or shape anisotropy.