Weak magnetic detecting component based on 2D artificial magnon crystal

The invention discloses a weak magnetic detecting component based on a 2D artificial magnon crystal. The weak magnetic detecting component based on a 2D artificial magnon crystal comprises a nonmagnetic lining, wherein a ferromagnetic film layer is arranged; a patterned ferromagnetic element array prepared by a ferromagnetic material and periodically arranged is arranged on the ferromagnetic film layer; under a combined action of a constant auxiliary magnetic field and a high-frequency alternating electromagnetic field, a spin wave is generated on the surface of the periodically arranged element, and a resonance peak is formed near one frequency by means of generating a resonance absorption phenomenon; the resonance effect of the spin wave is applied to a sensor apparatus; the weak magnetic detecting component based on such a structure is called as a 2D artificial magnon crystal. The weak magnetic detecting component based on the 2D artificial magnon crystal, provided by the invention, is simple in structure and is capable of acquiring weak signals through flexibly regulating the parameters of the component.