Table 1 Composition of the multilayer samples used in this work along the saturation magnetization \(M_s\), the uniaxial anisotropy \(H_k\) and the DMI constant value D used in the micromagnetic simulations.
Sample | Composition (thickness in nanometers) | \(M_s\) (kA m\(^{-1}\)) | \(\mu _0H_k\) (mT) | D (mJ m\(^{-2}\)) |
|---|---|---|---|---|
S1 | \(\vert \vert\)Ta(10)\(\vert\)Pt(8)\(\vert\)[Co(0.8)\(\vert\)Al\(_2\)O\(_3\)(1)\(\vert\)Pt(1)]\(_{\times 20}\vert\)Pt(2) | 1373 | 358 | 0.9 |
S2 | \(\vert \vert\)Ta(10)\(\vert\)[Al\(_2\)O\(_3\)(1.0)\(\vert\)Co(1)\(\vert\)Pt(1.0)]\(_{\times 20}\vert\)Pt(7) | 1278 | 84 | \(-1.7\) |
S3 | \(\vert \vert\)Pt(10)\(\vert\)[Ir(1.0)\(\vert\)Co(0.8)\(\vert\)Pt(1.0)]\(_{\times 5}\vert\)Pt(3) | 1229 | 640 | \(-2.0\) |