| Autor: |
Bernd Büchner, Reinoud Lavrijsen, Henk J. M. Swagten, Juriaan Lucassen, Patrizia Fritsch, Sabine Wurmehl |
| Rok vydání: |
2020 |
| Předmět: |
|
| DOI: |
10.21203/rs.3.rs-120487/v1 |
| Popis: |
The interfacial Dzyaloshinskii-Moriya interaction (iDMI) was investigated in Co thin-films with different combinations of seeding and capping layers in previous works. The variations in the local magnetic out-of-plane (oop) anisotropy K as a function of film thickness t lead to additional contributions that make the quantification of the iDMI more challenging. These additional contributions were specifically attributed to the transition of fcc Co to hcp Co at a critical thickness tcr. In this work we clarify this issue by investigating the local structure and local magnetic stiffness and their contribution to the oop anisotropy K in two Pt/Co(t)/Ir film stacks with t = 10 nm and t = 25 nm. Zero-field nuclear magnetic resonance spectroscopy (ZF NMR) is the method of choice as it is a non-destructive and sensitive probe to examine structure and magnetic properties of nano-sized samples. We describe the evolution of the Co allotropes (fcc & hcp) and stacking fault disorder with the increase of t and illustrate the structure-property relationship between the local environments of Co and their respective magnetic stiffness. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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