Analysis of Magnetic Relaxation With Pre-Existing Nucleation Sites Based on the Fatuzzo-Labrune Model

作者：Duy Truong Quach; Handoko Djati; Lee Sang Hyuk; Shim Je Ho; The Long Phan; Duc Thang Pham; Lee Kyung Min; Jeong Jong Ryul; Duc The Ngo; Kim Dong Hyun^*

来源：IEEE Transactions on Magnetics, 2015, 51(11): 6502904.

DOI：10.1109/TMAG.2015.2443855

• Fatuzzo-Labrune model
• magnetization reversal mechanism
• pre-existing nucleation sites
• relaxation process

Time-resolved magnetic domain patterns of (Co/Pt) and (CoFeB/Pd) multi-layers with a perpendicular magnetic anisotropy are observed by means of magneto-optical microscopy, from which magnetic relaxation curves are determined via a quantitative image analysis. Interestingly, it has been observed that the relaxation processes starting with pre-existing nucleation sites, as well as starting from a fully saturated state, are well explained based on the Fatuzzo-Labrune model, although the pre-existing nucleation sites significantly modify the magnetization reversal behaviors.

• 出版日期2015-11