Evolution of Magnetic Domain Structure in a YIG Thin Film

The evolution of a magnetic domain structure induced by temperature and magnetic field is reported in silicon-doped yttrium iron garnet (YIG) films with perpendicular anisotropy. During a cooling-down procedure from 300K to 7 K, a 20% change in the domain width is observed, with the long tails of the stripes being shortened and the twisting stripes being straightened. Under the influence of the stray field of a barium ferrite, the garnet presents an interesting domain structure, which shows an appearance of branching protrusions. The intrinsic mechanisms in these two processes are also discussed.National Basic Research Program of China [2013CB922304]; National Natural Science Foundation of China [91321310]SCI(E)中国科技核心期刊(ISTIC)中国科学引文数据库(CSCD)ARTICLEjiyang@semi.ac.cn4047502-01-047502-043