Coupled vortex oscillations in mesoscale ferromagnetic double-disk structures

S. Jain; H. Schultheiss; O. Heinonen; F. Y. Fradin; J. E. Pearson; S. D. Bader; V. Novosad

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Coupled vortex oscillations in mesoscale ferromagnetic double-disk structures

机译：中尺度铁磁双盘结构中的耦合涡旋振动

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Coupled resonance modes in connected ferromagnetic double-dot structures have been investigated as a function of the overlap between the dots, both experimentally and via micromagnetic simulations. An asymmetry is observed in the frequency spectrum about zero field. Softening of the magnetization during vortex core precession when the cores are near the overlap region results in low-frequency modes and a splitting corresponding to different polarity combinations. A range of vortex resonance frequencies are identified that can be tuned by varying the overlap area. This study provides insight into the control of the dynamic response in coupled mesoscale magnetic structures.

机译：已经通过实验和通过微磁模拟研究了连接的铁磁双点结构中耦合共振模式随点之间重叠的关系。在频谱中大约零场处观察到不对称。当铁心在重叠区域附近时，在旋涡铁心进动期间磁化强度的减弱会导致低频模式和对应于不同极性组合的分裂。确定了可以通过改变重叠区域来调谐的涡旋共振频率范围。这项研究提供了对耦合中尺度磁性结构中动态响应控制的见解。

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来源
《Physical review》 |2012年第21期|214418.1-214418.6|共6页
作者
S. Jain; H. Schultheiss; O. Heinonen; F. Y. Fradin; J. E. Pearson; S. D. Bader; V. Novosad;
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作者单位

Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA;

Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA;

Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA;

Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA;

Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA;

Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA;

Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA;

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正文语种 eng
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关键词
dynamic properties (dynamic susceptibility, spin waves, spin diffusion, dynamic scaling, etc.);

机译：动态特性（动态磁化率;自旋波;自旋扩散;动态缩放等）;

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1. Coupled oscillations of vortex cores confined in a ferromagnetic elliptical disk [J] . Hiroshi Hata, Minori Goto, Akinobu Yamaguchi, Physical review . 2014,第10期

机译：局限在铁磁椭圆盘中的涡旋核的耦合振动
2. Vortex dynamics in coupled ferromagnetic multilayer structures [J] . Kang Wei Chou, Aleksandar Puzic, Hermann Stoll, Journal of Applied Physics . 2006,第8Pt2期

机译：耦合铁磁多层结构中的涡旋动力学
3. Excitation of coupled oscillations in lateral ferromagnetic heterostructures [J] . Nikolay I. Polushkin Physical review . 2008,第18期

机译：横向铁磁异质结构中耦合振动的激发
4. Vortex dynamics in coupled ferromagnetic multilayer structures [C] . Kang Wei Chou, Aleksandar Puzic, Hermann Stoll Annual Conference on Magnetism and Magnetic Materials . 2005

机译：耦合铁磁多层结构的涡流动力学
5. Ferromagnetic resonance study in exchange coupled magnetic/"non-magnetic" multilayer structures. [D] . Zhang, Zhenyong. 1994

机译：交换耦合的磁性/“非磁性”多层结构中的铁磁共振研究。
6. Stiffness in vortex—like structures due to chirality-domains within a coupled helical rare-earth superlattice [O] . Amitesh Paul -1

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7. Superconducting Vortex‐Antivortex Pairs: Nucleation and Confinement in Magnetically Coupled Superconductor‐Ferromagnet Hybrids [O] . Di Giorgio, Cinzia, D'Agostino, Domenico, Cucolo, Anna Maria, 2017

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Coupled vortex oscillations in mesoscale ferromagnetic double-disk structures

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