期刊
PHYSICAL REVIEW B
卷 91, 期 10, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.91.104414
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资金
- Netherlands Organization for Scientific Research [NWO-680-47-428]
- Solliance
- Foundation for Fundamental Research on Matter (FOM) which is part of NWO
- NanoNextNL, a Micro and Nanotechnology Consortium of the Government of the Netherlands
We analyze the impact of growth conditions on the asymmetric magnetic bubble expansion under an in-plane field in ultrathin Pt/Co/Pt films. Specifically, using sputter deposition, we vary the Ar pressure during the growth of the top Pt layer. This induces a large change in the interfacial structure as evidenced by a factor three change in the effective perpendicular magnetic anisotropy. Strikingly, a discrepancy between the current theory for domain-wall propagation based on a simple domain-wall energy density and our experimental results is found. This calls for further theoretical development of domain-wall creep under in-plane fields and varying structural asymmetry.
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