%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.