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The Role of Proximity-Induced-Magnetization in Interlayer Coupling in Ferromagnetic/Heavy Metal/Ferromagnetic Multilayers [dataset] Open Access

Interlayer exchange interactions between ferromagnetic thin films separated by non-magnetic spacers are a cornerstone of spintronic technologies. While coupling through materials such as Cr and Ru is well described by the Ruderman–Kittel–Kasuya–Yosida (RKKY) mechanism, the origin of coupling across heavy metals like Pt is still not fully resolved. A commonly suggested explanation involves magnetization induced in Pt via proximity induced magnetization with adjacent ferromagnetic layers. Here, we report experimental results linking this proximity-induced magnetization to interlayer coupling in CoFe/Pt/CoFe trilayers, as the Pt thickness is varied. Magneto-optical Kerr effect hysteresis measurements and resonant magnetic X-ray data show a clear evolution in switching behavior: a transition from two-step to single-step magnetization reversal occurs as the Pt layer becomes thinner, signaling the emergence and strengthening of coupling. Additionally, resonant magnetic X-ray reflectivity reveals depth-dependent magnetization profiles, indicating that for sufficiently thin Pt spacers, the induced magnetic moment extends continuously across the entire Pt layer. These results provide important insight into the mechanism governing interlayer coupling in multilayer systems incorporating heavy-metal spacers.

Descriptions

Resource type

Dataset

Contributors

Creator: Rianto, Debi ¹
Data collector: Rianto, Debi ¹
Editor: Rianto, Debi ¹
Contact person: Atkinson, Del ¹

¹ Durham University, United Kingdom

Funder

Engineering and Physical Sciences Research Council

Research methods

Magnetic X-ray Reflectivity
Magneto-optical Kerr Effect

Other description

Keyword

Pt
Interlayer Coupling
Magnetic Proximity

Subject

Spintronics

Location

Language

Cited in

Identifier

ark:/32150/r2zs25x8540
doi:10.15128/r2zs25x8540

Rights

Creative Commons Attribution 4.0 International (CC BY)

Publisher

Durham University

Date Created

File Details

Depositor

D. Rianto

Date Uploaded

8 June 2026, 03:06:53

Date Modified

8 June 2026, 12:06:47

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File format: zip (ZIP Format)

Mime type: application/zip

File size: 778921

Last modified: 2026:06:08 04:55:47+01:00

Filename: Data for Manuscript.zip

Original checksum: 0f35813da92ff2eb86f48c67168e2d27