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Chin. Phys. B, 2022, Vol. 31(11): 117505    DOI: 10.1088/1674-1056/ac8af9

Angle-dependent spin wave spectra of permalloy ring arrays

Shuxuan Wu(吴书旋)1, Zengtai Zhu(朱增泰)2, Yunxu Ma(马云旭)1, Jinwu Wei(魏晋武)1, Senfu Zhang(张森富)1, Jianbo Wang(王建波)1,3, and Qingfang Liu(刘青芳)1,†
1 Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou 730000, China;
2 Songshan Lake Materials Laboratory, Dongguan 523808, China;
3 Key Laboratory for Special Function Materials and Structural Design of the Ministry of the Education, Lanzhou University, Lanzhou 730000, China
Abstract  We investigated the angle-dependent spin wave spectra of permalloy ring arrays with the fixed outer diameter and various inner diameters by ferromagnetic resonance spectroscopy and micromagnetic simulation. When the field is obliquely applied to the ring, local resonance mode can be observed in different parts of the rings. And the resonance mode will change to perpendicular spin standing waves if the magnetic field is applied along the perpendicular direction. The simulation results demonstrated this evolution and implied more resonance modes that maybe exist. And the mathematical fitting results based on the Kittel equation further proved the existence of local resonance mode.
Keywords:  spin waves      magnetic resonance spectra      spintronic devices  
Received:  30 June 2022      Revised:  04 August 2022      Accepted manuscript online:  19 August 2022
PACS:  75.30.Ds (Spin waves)  
  32.30.Dx (Magnetic resonance spectra)  
  85.75.-d (Magnetoelectronics; spintronics: devices exploiting spin polarized transport or integrated magnetic fields)  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 12074158, 12174166, and 12104197).
Corresponding Authors:  Qingfang Liu     E-mail:

Cite this article: 

Shuxuan Wu(吴书旋), Zengtai Zhu(朱增泰), Yunxu Ma(马云旭), Jinwu Wei(魏晋武), Senfu Zhang(张森富), Jianbo Wang(王建波), and Qingfang Liu(刘青芳) Angle-dependent spin wave spectra of permalloy ring arrays 2022 Chin. Phys. B 31 117505

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