Asymmetric magnetic bubble expansion under in-plane field in Pt/Co/Pt: effect of interface engineering
arXiv:1503.08999 · doi:10.1103/PhysRevB.91.104414
Abstract
We analyse the impact of growth conditions on asymmetric magnetic bubble expansion under 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.
16 pages, 3 figures
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Cited by in corpus (23)
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