Author: Yves Roussigné

0000000000424871

AUTHOR

Yves Roussigné

showing 1 related works from this author

Enhancing domain wall velocity through interface intermixing in W-CoFeB-MgO films with perpendicular anisotropy

2019

We study the influence of He+ irradiation induced interface intermixing on magnetic domain wall (DW) dynamics in W-CoFeB (0.6 nm)-MgO ultrathin films, which exhibit high perpendicular magnetic anisotropy and large Dzyaloshinskii-Moriya interaction (DMI) values. Whereas the pristine films exhibit strong DW pinning, we observe a large increase in the DW velocity in the creep regime upon He+ irradiation, which is attributed to the reduction of pinning centers induced by interface intermixing. Asymmetric in-plane field-driven domain expansion experiments show that the DMI value is slightly reduced upon irradiation, and a direct relationship between DMI and interface anisotropy is demonstrated. …

010302 applied physicsMaterials sciencePhysics and Astronomy (miscellaneous)SpintronicsMagnetic domainCondensed matter physics530 PhysicsPerpendicular magnetic anisotropy02 engineering and technology530 Physik021001 nanoscience & nanotechnology01 natural sciences[SPI]Engineering Sciences [physics]Domain wall (magnetism)Creep[PHYS.COND.CM-GEN]Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other]0103 physical sciencesPerpendicular anisotropyIrradiation[PHYS.COND]Physics [physics]/Condensed Matter [cond-mat]0210 nano-technologyAnisotropyComputingMilieux_MISCELLANEOUS

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