Proximity-induced magnetism and the enhancement of damping in ferromagnetic/heavy metal systems
- Durham Univ. (United Kingdom); Univ. of Sheffield (United Kingdom)
- Polish Academy of Sciences, Poznań (Poland)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Łukasiewicz Research Network—Inst. of Microelectronics and Photonics, Warsaw (Poland)
- Univ. of Warwick, Coventry (United Kingdom)
- Durham Univ. (United Kingdom)
The relationship between proximity-induced magnetism (PIM) at the heavy metal/ferromagnet interface and spin-transport across such interfaces has generated significant debate. To investigate the link between the two, element specific x-ray magnetic circular dichroism and ferromagnetic resonance measurements were made on the same CoFe/Au/Pt and NiFe/Au/Pt thin film samples with varying Au thickness, with complementary SIMS analysis, which shows evidence of Ni diffusion from NiFe into the Pt. An approximately linear relationship is observed between the magnitude of Pt PIM and magnitude of damping enhancement in both systems. The results demonstrate that electronic hybridization of the heavy metal and ferromagnet is required for a full understanding of damping enhancement and interfacial spintransport for spintronic devices.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- Engineering and Physical Sciences Research Council (EPSRC); National Science Centre Poland; USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1868995
- Alternate ID(s):
- OSTI ID: 1825200
- Journal Information:
- Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 15 Vol. 119; ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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