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Updated: Dec 2, 2025
09:43
Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement
Published on: November 7, 2017
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The interactions between spin wave and stacked domain walls.
Zhong-Chen Gao1,2, Yuxuan Yang1, Yuanchang Su1
1School of Physical Science and Technology, Yangzhou University, Yangzhou 225002, People's Republic of China.
Summary
Spin waves interact with stacked domain walls in magnetic nanostrips. Stacked transverse walls (STWs) are robust, enabling controlled spin wave transmission and phase shifts, suggesting potential for magnonic devices.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Nanotechnology
Background:
- Spin waves (SWs) are fundamental excitations in magnetic materials.
- Domain walls (DWs) in magnetic nanostructures are crucial for spintronic devices.
- Understanding SW-DW interactions is key for developing novel magnonic devices.
Purpose of the Study:
- To investigate the interaction between spin waves and stacked domain walls (STWs) in magnetic nanostrips.
- To analyze the stability and dynamics of different domain wall structures under SW excitation.
- To explore the potential of STWs as channels for spin wave propagation.
Main Methods:
- Micromagnetic simulations were employed to model the system.
- The study focused on the behavior of transverse walls (TWs) and vortex walls (VW).
- Analysis included varying SW frequency and amplitude, and the number of stacked TWs.
Main Results:
- Metastable TWVW structures can transform or annihilate under SW excitation.
- Stacked TWs (STWs) exhibit robustness and can be moved by SWs with coherent motion.
- STWs demonstrate frequency-dependent velocity with resonant peaks linked to SW reflection and linear momentum transfer torque (LMTT).
- Spin wave transmission efficiency through STWs can exceed 100%, indicating low attenuation.
- Phase shifts of transmitted SWs increase linearly with the number of TWs and can be resonantly enhanced.
Conclusions:
- Stacked TWs are robust structures that can be manipulated by spin waves.
- STWs facilitate efficient spin wave transmission with low attenuation, acting as excellent SW channels.
- Controlled SW transmission and phase shifts by STWs offer promising applications in future magnonic and domain wall devices.
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