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Abstract In a nanostrip, two kinds of spin waves (SWs) were produced by two possible collisions of transverse domain walls (DWs) under the driving magnetic fields. By micromagnetic simulations, we… Click to show full abstract
Abstract In a nanostrip, two kinds of spin waves (SWs) were produced by two possible collisions of transverse domain walls (DWs) under the driving magnetic fields. By micromagnetic simulations, we illustrated the difference between these two SWs. Interestingly, the SW induced by the collision of two DWs with same chirality shows a narrow frequency bandwidth in nanostrips with width ranging from 20 to 40 nm. Furthermore, its bandwidth is not only strongly dependent on the width of nanostrip, but also can be remarkably manipulated by the bias magnetic fields. We argue that this provides a valid method to excite SWs with a controllable bandwidth in nanostrips. .
Journal Title: Journal of Magnetism and Magnetic Materials
Year Published: 2021
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