Asymmetric magnetic bubble expansion under in-plane field in Pt/Co/Pt: Effect of interface engineering

R. Lavrijsen; D. M. F. Hartmann; Ton van den Brink; Y. Yin; B. Barcones; R. A. Duine; M. A. Verheijen; H. J. M. Swagten; B. Koopmans

doi:10.1103/PhysRevB.91.104414

Asymmetric magnetic bubble expansion under in-plane field in Pt/Co/Pt: Effect of interface engineering

R. Lavrijsen^*, D. M. F. Hartmann, Ton van den Brink, Y. Yin, B. Barcones, R. A. Duine, M. A. Verheijen, H. J. M. Swagten, B. Koopmans

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

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.

Original language	English
Article number	104414
Number of pages	8
Journal	Physical review. B, Condensed matter and materials physics
Volume	91
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevB.91.104414
Publication status	Published - 17 Mar 2015

Funding

R.L. acknowledges support from the Netherlands Organization for Scientific Research (NWO-680-47-428). Solliance is acknowledged for funding the TEM facility. Y.Y. acknowledges support from the Foundation for Fundamental Research on Matter (FOM) which is part of NWO. A.B. acknowledges support by NanoNextNL, a Micro and Nanotechnology Consortium of the Government of the Netherlands and 130 partners.

Keywords

DOMAIN-WALLS
WEAK FERROMAGNETISM
DYNAMICS
FILMS
MULTILAYERS
SKYRMIONS
DRIVEN
CREEP

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Lavrijsen, R., Hartmann, D. M. F., van den Brink, T., Yin, Y., Barcones, B., Duine, R. A., Verheijen, M. A., Swagten, H. J. M., & Koopmans, B. (2015). Asymmetric magnetic bubble expansion under in-plane field in Pt/Co/Pt: Effect of interface engineering. Physical review. B, Condensed matter and materials physics, 91(10), Article 104414. https://doi.org/10.1103/PhysRevB.91.104414

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abstract = "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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AU - Lavrijsen, R.

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AU - Yin, Y.

AU - Barcones, B.

AU - Duine, R. A.

AU - Verheijen, M. A.

AU - Swagten, H. J. M.

AU - Koopmans, B.

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AB - 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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KW - FILMS

KW - MULTILAYERS

KW - SKYRMIONS

KW - DRIVEN

KW - CREEP

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Asymmetric magnetic bubble expansion under in-plane field in Pt/Co/Pt: Effect of interface engineering

Abstract

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Keywords

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