10.5518/1071
Alshammari, Khulaif
Khulaif
Alshammari
University of Leeds
Haltz, Eloi
Eloi
Haltz
https://orcid.org/0000-0001-7133-9800
University of Paris-Saclay
Alyami, Mohammed
Mohammed
Alyami
University of Leeds
Ali, Mannan
Mannan
Ali
https://orcid.org/0000-0002-7426-7731
University of Leeds
Keatley, Paul
Paul
Keatley
https://orcid.org/0000-0002-7679-6418
University of Exeter
Marrows, Christopher
Christopher
Marrows
https://orcid.org/0000-0003-4812-6393
University of Leeds
Barker, Joseph
Joseph
Barker
https://orcid.org/0000-0003-4843-5516
University of Leeds
Moore, Thomas
Thomas
Moore
https://orcid.org/0000-0001-6443-2556
University of Leeds
Dataset associated with 'Scaling of the Dzyaloshinskii-Moriya interaction with magnetization in Pt/Co(Fe)B/Ir multilayers'
University of Leeds
2021
dataset
Creative Commons Attribution 4.0 International
Magnetic multilayers with perpendicular anisotropy and an interfacial Dzyaloshinskii-Moriya interaction contain chiral domain walls and skyrmions that are promising for applications. Here we measure the temperature dependence of the Dzyaloshinskii-Moriya interaction (DMI) in Pt/CoFeB/Ir and Pt/CoB/Ir multilayers by means of static domain imaging. First, the temperature dependences of saturation magnetization ($M_{\rm{S}}$), exchange stiffness ($A$) and intrinsic perpendicular anisotropy ($K_{\rm{u}}$) are determined. Then the demagnetized domain pattern in each multilayer is imaged by wide-field Kerr microscopy in the temperature range 9-290 K, and the characteristic domain period at each temperature is determined. We calculate the DMI constant $D$ from an analytical expression for the domain wall energy density that treats the multilayer as a uniform medium. Scaling laws for $K_{\rm{u}}$ and $D$ with the magnetization are established from the experiments. While the scaling of $K_{\rm{u}}$ is consistent with Callen-Callen theory, we find that the scaling of $D$ is similar to that of $A$ predicted theoretically ($\sim1.8$).
Engineering and Physical Sciences Research Council
https://doi.org/10.13039/501100000266
EP/T006803/1
Engineering and Physical Sciences Research Council
https://doi.org/10.13039/501100000266
EP/T034343/1
Engineering and Physical Sciences Research Council
https://doi.org/10.13039/501100000266
EP/R008809/1