Visualization of Single Spin-chain Propagation using Bragg Coherent Diffraction Imaging

Domain wall dynamics and their manipulation in finite-size systems serve as a promising platform for beyond Moore's law applications. Yet, the imaging techniques to track their motion in real-space and time are limited. Here, we use magnetic domain walls formed in permalloy artificial square lattice to demonstrate that single-shot Bragg coherent diffraction imaging (BCDI) is a powerful approach for this purpose. Our BCDI reconstructed images revealed milliseconds time-scale dynamics of the antiphase magnetic domain walls traveling through an antiferromagnetically ordered sample.