# Research Data Leeds Repository

Dataset associated with 'Scaling of Dzyaloshinskii-Moriya interaction with magnetization in Pt/Co(Fe)B/Ir multilayers'

Alshammari, Khulaif and Haltz, Eloi and Alyami, Mohammed and Ali, Mannan and Keatley, Paul and Marrows, Christopher H. and Barker, Joseph and Moore, Thomas (2021) Dataset associated with 'Scaling of Dzyaloshinskii-Moriya interaction with magnetization in Pt/Co(Fe)B/Ir multilayers'. University of Leeds. [Dataset] https://doi.org/10.5518/1071

## Dataset description

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 ($\sim1.8$).

Subjects: F000 - Physical sciences > F300 - Physics
Divisions: Faculty of Mathematics and Physical Sciences > School of Physics and Astronomy
Related resources:
LocationType
https://doi.org/10.1103/PhysRevB.104.224402Publication
https://eprints.whiterose.ac.uk/180627/Publication
Date deposited: 30 Nov 2021 12:51
URI: http://archive.researchdata.leeds.ac.uk/id/eprint/907